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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">nsojout</journal-id><journal-title-group><journal-title xml:lang="ru">Строительство: наука и образование</journal-title><trans-title-group xml:lang="en"><trans-title>Construction: Science and Education</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2305-5502</issn><publisher><publisher-name>ФГБОУ ВО «Национальный исследовательский Московский государственный строительный университет»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22227/2305-5502.2026.2.4</article-id><article-id custom-type="elpub" pub-id-type="custom">nsojout-365</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Строительные конструкции. Основания и фундаменты. Технология и организация строительства. Проектирование зданий и сооружений. Инженерные изыскания и обследование зданий</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Building structures. Soils and foundations. Technology and organization of construction. Designing of buildings and constructions. Engineering survey and inspection of buildings</subject></subj-group></article-categories><title-group><article-title>Влияние вторичной консолидации на длительные осадки оснований фундаментных плит большой площади</article-title><trans-title-group xml:lang="en"><trans-title>Effect of secondary consolidation on long-term settlements of large-area raft foundations</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8787-826X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тер-Мартиросян</surname><given-names>А. З.</given-names></name><name name-style="western" xml:lang="en"><surname>Ter-Martirosyan</surname><given-names>A. Z.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Армен Завенович Тер-Мартиросян — доктор технических наук, доцент кафедры геотехники</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>Scopus: 35621133900, ResearcherID: Q-8635-2017</p></bio><bio xml:lang="en"><p>Armen Z. Ter-Martirosyan — Doctor of Technical Sciences, Associate Professor of the Department of Geotechnics</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>Scopus: 35621133900, ResearcherID: Q-8635-2017</p></bio><email xlink:type="simple">gic-mgsu@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1522-320X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Романенко</surname><given-names>Л. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Romanenko</surname><given-names>L. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Любовь Юрьевна Романенко — кандидат технических наук, научный сотрудник, Научно-образовательный центр «Геотехника» им. З.Г. Тер-Мартиросяна (НОЦ «Геотехника» им. З.Г. Тер-Мартиросяна)</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>РИНЦ AuthorID: 991280, Scopus: 57205215830, ResearcherID: AGV-6847-2022</p></bio><bio xml:lang="en"><p>Lyubov Yu. Romanenko — Candidate of Technical Sciences, Researcher, Scientific and Educational Center “Geotechnics” named after Z.G. Ter-Martirosyan (SEC “Geotechnics” named after Z.G. Ter-Martirosyan)</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>RSCI AuthorID: 991280, Scopus: 57205215830, ResearcherID: AGV-6847-2022</p></bio><email xlink:type="simple">lyubov.ermoshina1801@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0596-336X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рудь</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Rud</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виктория Владимировна Рудь — кандидат технических наук, научный сотрудник, Научно-образовательный центр «Геотехника» им. З.Г. Тер-Мартиросяна (НОЦ «Геотехника» им. З.Г. Тер-Мартиросяна)</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>РИНЦ AuthorID: 992433, Scopus: 58295443600, ResearcherID: MCK-3917-2025</p></bio><bio xml:lang="en"><p>Victoria V. Rud — Candidate of Technical Sciences, Researcher, Scientific and Educational Center “Geotechnics” named after Z.G. Ter-Martirosyan (SEC “Geotechnics” named after Z.G. Ter-Martirosyan)</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>RSCI AuthorID: 992433, Scopus: 58295443600, ResearcherID: MCK-3917-2025</p></bio><email xlink:type="simple">victoriadll@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-4531-4249</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шишкина</surname><given-names>П. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shishkina</surname><given-names>P. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Полина Владимировна Шишкина — студент</p><p>129337, г. Москва, Ярославское шоссе, д. 26</p><p>РИНЦ AuthorID: 1318761, Scopus: 58295443600</p></bio><bio xml:lang="en"><p>Polina V. Shishkina — student</p><p>26 Yaroslavskoe shosse, Moscow, 129337</p><p>RSCI AuthorID: 1318761, Scopus: 58295443600</p></bio><email xlink:type="simple">pshishkina638@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский Московский государственный строительный университет (НИУ МГСУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State University of Civil Engineering (National Research University) (MGSU)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>30</day><month>06</month><year>2026</year></pub-date><volume>16</volume><issue>2</issue><fpage>64</fpage><lpage>81</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тер-Мартиросян А.З., Романенко Л.Ю., Рудь В.В., Шишкина П.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Тер-Мартиросян А.З., Романенко Л.Ю., Рудь В.В., Шишкина П.В.</copyright-holder><copyright-holder xml:lang="en">Ter-Martirosyan A.Z., Romanenko L.Y., Rud V.V., Shishkina P.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.nso-journal.ru/jour/article/view/365">https://www.nso-journal.ru/jour/article/view/365</self-uri><abstract><sec><title>Введение</title><p>Введение. Рассматривается задача оценки влияния ползучести (вторичной консолидации) на длительные осадки оснований фундаментных плит большой площади. Работа продолжает ранее выполненное авторами исследование роли анизотропии фильтрационных свойств грунта в процессе двумерной консолидации и сосредоточена на количественной оценке вклада ползучести грунтового скелета в общую величину осадки.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Проведено параметрическое численное исследование методом конечных элементов (Plaxis 2D) для осесимметричной модели фундаментной плиты на глинистом основании. Осуществлено сопоставление моделей Soft Soil (SS, без учета ползучести) и Soft Soil Creep (SSC, с учетом) при варьировании соотношения R/H (0,5; 2,0; 6,0), модифицированного индекса ползучести μ* (0,005; 0,01) и коэффициента анизотропии фильтрации kx/ky (1; 5). Дополнительно исследовано влияние горизонтальных песчаных прослоев.</p></sec><sec><title>Результаты</title><p>Результаты. Ползучесть способна увеличивать конечную осадку в 1,5–5,4 раза в зависимости от геометрии задачи и интенсивности ползучести (коэффициент η). Дренирующие прослои ускоряют первичную консолидацию в 3–11 раз, однако снижают итоговую осадку при наличии ползучести лишь на 5–16 %. Анизотропия проницаемости не оказывает существенного влияния на конечную осадку (расхождение менее 2 %).</p></sec><sec><title>Выводы</title><p>Выводы. Учет вторичной консолидации обязателен при μ* ≥ 0,005 (Cα/Cc ≥ 0,10), характерном для органоминеральных глин и заторфованных грунтов. Горизонтальные дренирующие слои не устраняют проблему длительных вторичных осадок.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. This paper evaluates the effect of creep (secondary consolidation) on long-term settlements of large-area raft foundations. The study extends the authors’ previous work on the role of permeability anisotropy in two-dimensional primary consolidation and focuses on quantifying the contribution of skeleton creep to total settlement.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. A parametric finite element study was carried out using Plaxis 2D for an axisymmetric raft foundation model on a clay stratum. The Soft Soil (SS, no creep) and Soft Soil Creep (SSC) models were compared while varying R/H (0.5; 2.0; 6.0), the modified creep index μ* (0.005; 0.01) and permeability anisotropy kx/ky (1; 5). The effect of horizontal sand interlayers was also investigated.</p></sec><sec><title>Results</title><p>Results. Creep can increase the final settlement by a factor of 1.5–5.4 depending on R/H and μ* (coefficient η). Sand interlayers accelerate primary consolidation by a factor of 3–11 but reduce the creep-related final settlement by only 5–16 %. Permeability anisotropy has a negligible effect on final settlement (difference below 2 %).</p></sec><sec><title>Conclusions</title><p>Conclusions. Secondary consolidation must be accounted for when μ* ≥ 0.005 (Cα/Cc ≥ 0.10), typical of soft organomineral clays, peaty soils, and silts. Horizontal drainage layers do not eliminate the problem of long-term secondary settlements.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>вторичная консолидация</kwd><kwd>ползучесть</kwd><kwd>фундаментная плита</kwd><kwd>Soft Soil Creep</kwd><kwd>метод конечных элементов</kwd><kwd>Plaxis</kwd><kwd>осадки во времени</kwd><kwd>песчаные прослои</kwd></kwd-group><kwd-group xml:lang="en"><kwd>secondary consolidation</kwd><kwd>creep</kwd><kwd>raft foundation</kwd><kwd>Soft Soil Creep</kwd><kwd>finite element method</kwd><kwd>Plaxis</kwd><kwd>time-dependent settlement</kwd><kwd>sand interlayers</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Тер-Мартиросян А.З., Рудь В.В., Шишкина П.В., Варосян А.М. Двумерная консолидация основания фундаментной плиты с учетом анизотропии фильтрационных свойств грунта // Жилищное строительство. 2026. № 4. С. 47–52. DOI: 10.31659/0044-4472-2026-4-47-52. EDN IWJMXR.</mixed-citation><mixed-citation xml:lang="en">Ter-Martirosyan A.Z., Rud V.V., Shishkina P.V., Varosyan A.M. Two-dimensional consolidation of raft foundation subsoil considering soil permeability anisotrop. Housing Construction. 2026; 4:47-52. DOI: 10.31659/0044-4472-2026-4-47-52. EDN IWJMXR. (rus.).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Терцаги К., Пек Р. Механика грунтов в инженерной практике. М. : Госстройиздат, 1958. 608 с.</mixed-citation><mixed-citation xml:lang="en">Terzaghi K., Peck R. Soil Mechanics in Engineering Practice. Moscow, Gosstroyizdat, 1958; 608. (rus.).</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Bjerrum L. Engineering Geology of Norwegian Normally-Consolidated Marine Clays as Related to Settlements of Buildings // Géotechnique. 1967. Vol. 17. Issue 2. Pp. 83–118. DOI: 10.1680/geot.1967.17.2.83</mixed-citation><mixed-citation xml:lang="en">Bjerrum L. Engineering Geology of Norwegian Normally-Consolidated Marine Clays as Related to Settlements of Buildings. Géotechnique. 1967; 17(2):83-118. DOI: 10.1680/geot.1967.17.2.83</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Mesri G., Godlewski P.M. Time- and Stress-Compressibility Interrelationship // Journal of the Geotechnical Engineering Division. 1977. Vol. 103. Issue 5. Pp. 417–430. DOI: 10.1061/ajgeb6.0000421</mixed-citation><mixed-citation xml:lang="en">Mesri G., Godlewski P.M. Time- and Stress-Compressibility Interrelationship. Journal of the Geotechnical Engineering Division. 1977; 103(5):417-430. DOI: 10.1061/ajgeb6.0000421</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Mesri G., Castro A. Cα/Cc Concept and K0 During Secondary Compression // Journal of Geotechnical Engineering. 1987. Vol. 113. Issue 3. Pp. 230–247. DOI: 10.1061/(asce)0733-9410(1987)113:3(230)</mixed-citation><mixed-citation xml:lang="en">Mesri G., Castro A. Cα/Cc Concept and K0 During Secondary Compression. Journal of Geotechnical Engineering. 1987; 113(3):230-247. DOI: 10.1061/(asce)0733-9410(1987)113:3(230)</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Ladd C.C., Foot R., Ishihara K., Schlosser F., Poulos H.G. Stress-Deformation and Strength Characteristics // 9th International Conference on Soil Mechanics and Foundation Engineering. 1977. Vol. 2.</mixed-citation><mixed-citation xml:lang="en">Ladd C.C., Foot R., Ishihara K., Schlosser F., Poulos H.G. Stress-Deformation and Strength Characteristics. 9th International Conference on Soil Mechanics and Foundation Engineering. 1977; 2.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Месчян С.Р. Механические свойства грунтов и лабораторные методы их определения. М. : Недра, 1974. 191 с.</mixed-citation><mixed-citation xml:lang="en">Meshchyan S.R. Mechanical Properties of Soils. Moscow, Nedra, 1974; 191. (rus.).</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Вялов С.С. Реологические основы механики грунтов. М. : Высшая школа, 1978. 447 с.</mixed-citation><mixed-citation xml:lang="en">Vyalov S.S. Rheological Fundamentals of Soil Mechanics. Moscow, Vysshaya Shkola, 1978; 447. (rus.).</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Зарецкий Ю.К. Вязкопластичность грунтов и расчеты сооружений. М. : Стройиздат, 1988. 352 с.</mixed-citation><mixed-citation xml:lang="en">Zaretskiy Yu.K. Viscoplasticity of Soils and Structural Design. Moscow, Stroyizdat, 1988; 352. (rus.).</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Тер-Мартиросян А.З., Сидоров В.В., Ермошина Л.Ю. Определение и верификация параметров модели слабого грунта с учетом ползучести // Вестник МГСУ. 2018. Т. 13. № 6 (117). С. 697–708. DOI: 10.22227/1997-0935.2018.6.697-70</mixed-citation><mixed-citation xml:lang="en">Ter-Martirosyan A.Z., Sidorov V.V., Ermoshina L.Yu. Determination and verification of parameters of the soft soil model with account for creep. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2018; 13(6)(117):697-708. DOI: 10.22227/1997-0935.2018.6.697-708 (rus.).</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Šuklje L. Rheological Aspects of Soil Mechanics. London : Wiley-Interscience, 1969. 571 p.</mixed-citation><mixed-citation xml:lang="en">Šuklje L. Rheological Aspects of Soil Mechanics. London, Wiley-Interscience, 1969; 571.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Vermeer P.A., Neher H.P. A Soft Soil Model that Accounts for Creep // Beyond 2000 in Computational Geotechnics. 1999. Pp. 249–261.</mixed-citation><mixed-citation xml:lang="en">Vermeer P.A., Neher H.P. A Soft Soil Model that Accounts for Creep. Beyond 2000 in Computational Geotechnics. 1999; 249-261.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Yin J.-H., Graham J. Viscous-Elastic-Plastic Modelling of One-Dimensional Time-Dependent Behaviour of Clays // Canadian Geotechnical Journal. 1989. Vol. 26. Issue 2. Pp. 199–209. DOI: 10.1139/t89-029</mixed-citation><mixed-citation xml:lang="en">Yin J.-H., Graham J. Viscous-Elastic-Plastic Modelling of One-Dimensional Time-Dependent Behaviour of Clays. Canadian Geotechnical Journal. 1989; 26(2):199-209. DOI: 10.1139/t89-029</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Leoni M., Karstunen M., Vermeer P.A. Anisotropic Creep Model for Soft Soils // Géotechnique. 2008. Vol. 58. Issue 3. Pp. 215–226. DOI: 10.1680/geot.2008.58.3.215</mixed-citation><mixed-citation xml:lang="en">Leoni M., Karstunen M., Vermeer P.A. Anisotropic Creep Model for Soft Soils. Géotechnique. 2008; 58(3):215-226. DOI: 10.1680/geot.2008.58.3.215</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Leroueil S. The Isotache Approach. Where Are We 50 Years After Its Development by Professor Šuklje? // Proc. 13th Danube-European Conf. on SMGE. Ljubljana, 2006. Vol. 1. Pp. 55–88.</mixed-citation><mixed-citation xml:lang="en">Leroueil S. The Isotache Approach. Where Are We 50 Years After Its Development by Professor Šuklje? Proc. 13th Danube-European Conf. on SMGE. Ljubljana, 2006; 1:55-88.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Degago S.A., Nordal S., Grimstad G., Jostad H.P. Analyses Relative to the Uniqueness of the End-of-Primary Void Ratio–Effective Stress Relationship // Canadian Geotechnical Journal. 2011. Vol. 48. Issue 8. Pp. 1268–1271.</mixed-citation><mixed-citation xml:lang="en">Degago S.A., Nordal S., Grimstad G., Jostad H.P. Analyses Relative to the Uniqueness of the End-of-Primary Void Ratio–Effective Stress Relationship. Canadian Geotechnical Journal. 2011; 48(8):1268-1271.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Bhartiya P., Basu D., Chakraborty T. Time-Dependent Response of Rectangular Piled Rafts in Clayey Soils // Journal of Geotechnical and Geoenvironmental Engineering. 2022. Vol. 148. Issue 5. DOI: 10.1061/(ASCE)GT.1943-5606.0002758</mixed-citation><mixed-citation xml:lang="en">Bhartiya P., Basu D., Chakraborty T. Time-Dependent Response of Rectangular Piled Rafts in Clayey Soils. Journal of Geotechnical and Geoenvironmental Engineering. 2022; 148(5). DOI: 10.1061/(ASCE)GT.1943-5606.0002758</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Chen Z., Li P., Wu P., Yin J., Song D. Study of the one-dimensional consolidation and creep of clays with different thicknesses using different hypotheses and three elastic visco-plastic models // Acta Geotechnica. 2024. Vol. 19. Issue 11. Pp. 7329–7347. DOI: 10.1007/s11440-024-02405-w</mixed-citation><mixed-citation xml:lang="en">Chen Z., Li P., Wu P., Yin J., Song D. Study of the one-dimensional consolidation and creep of clays with different thicknesses using different hypotheses and three elastic visco-plastic models. Acta Geotechnica. 2024; 19(11):7329-7347. DOI: 10.1007/s11440-024-02405-w</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Potts D.M., Zdravkovic L. Finite Element Analysis in Geotechnical Engineering: Volume One — Theory. London : Thomas Telford, 1999. 440 p. DOI: 10.1680/feaiget.27534</mixed-citation><mixed-citation xml:lang="en">Potts D.M., Zdravkovic L. Finite Element Analysis in Geotechnical Engineering: Volume One — Theory. London, Thomas Telford, 1999; 440. DOI: 10.1680/feaiget.27534</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Biot M.A. General Theory of Three-Dimensional Consolidation // Journal of Applied Physics. 1941. Vol. 12. Issue 2. Pp. 155–164. DOI: 10.1063/1.1712886</mixed-citation><mixed-citation xml:lang="en">Biot M.A. General Theory of Three-Dimensional Consolidation. Journal of Applied Physics. 1941; 12(2):155-164. DOI: 10.1063/1.1712886</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
