{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,17]],"date-time":"2026-01-17T19:48:43Z","timestamp":1768679323364,"version":"3.49.0"},"reference-count":51,"publisher":"Springer Science and Business Media LLC","issue":"4","license":[{"start":{"date-parts":[[2024,5,16]],"date-time":"2024-05-16T00:00:00Z","timestamp":1715817600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"},{"start":{"date-parts":[[2024,5,16]],"date-time":"2024-05-16T00:00:00Z","timestamp":1715817600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["12171017"],"award-info":[{"award-number":["12171017"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["11801387"],"award-info":[{"award-number":["11801387"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Comp. Appl. Math."],"published-print":{"date-parts":[[2024,6]]},"DOI":"10.1007\/s40314-024-02770-y","type":"journal-article","created":{"date-parts":[[2024,5,16]],"date-time":"2024-05-16T15:01:41Z","timestamp":1715871701000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["An adaptive finite element PML method for Helmholtz equations in periodic heterogeneous media"],"prefix":"10.1007","volume":"43","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3160-0282","authenticated-orcid":false,"given":"Xue","family":"Jiang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhongjiang","family":"Sun","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lijuan","family":"Sun","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qiang","family":"Ma","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,5,16]]},"reference":[{"key":"2770_CR1","doi-asserted-by":"crossref","first-page":"553","DOI":"10.1137\/S0036142903423460","volume":"42","author":"M Ainsworth","year":"2004","unstructured":"Ainsworth M (2004) Discrete dispersion relation for hp-version finite element approximation at high wave number. SIAM J Numer Anal 42:553\u2013575","journal-title":"SIAM J Numer Anal"},{"key":"2770_CR2","doi-asserted-by":"crossref","first-page":"1482","DOI":"10.1137\/0523084","volume":"23","author":"G Allaire","year":"1992","unstructured":"Allaire G (1992) Homogenization and two-scale convergence. SIAM J Math Anal 23:1482\u20131518","journal-title":"SIAM J Math Anal"},{"key":"2770_CR3","unstructured":"Babu\u0161ka I, Aziz A (1973) Survey lectures on mathematical foundations of the finite element method. In: Aziz A (ed) The mathematical foundations of the finite element method with application to the partial differential equations. Academic Press, New York, pp 5\u2013359"},{"key":"2770_CR4","doi-asserted-by":"crossref","first-page":"2121","DOI":"10.1137\/040604315","volume":"43","author":"G Bao","year":"2005","unstructured":"Bao G, Wu H (2005) On the convergence of the solutions of PML equations for Maxwell\u2019s equations. SIAM J Numer Anal 43:2121\u20132143","journal-title":"SIAM J Numer Anal"},{"key":"2770_CR5","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1090\/S0025-5718-09-02257-1","volume":"79","author":"G Bao","year":"2010","unstructured":"Bao G, Li P, Wu H (2010) An adaptive edge element method with perfectly matched absorbing layers for wave scattering by periodic structures. Math Comput 79:1\u201334","journal-title":"Math Comput"},{"key":"2770_CR6","doi-asserted-by":"crossref","first-page":"2129","DOI":"10.1090\/mcom\/3165","volume":"86","author":"H Barucq","year":"2017","unstructured":"Barucq H, Chaumont-Frelet T, Gout C (2017) Stability analysis of heterogeneous Helmholtz problems and finite element solution based on propagation media approximation. Math Comput 86:2129\u20132157","journal-title":"Math Comput"},{"key":"2770_CR7","volume-title":"Asymptotic analysis of periodic structures","author":"A Bensoussan","year":"1978","unstructured":"Bensoussan A, Lions JL, Papanicolaou G (1978) Asymptotic analysis of periodic structures. North-Holland, Amsterdam"},{"key":"2770_CR8","doi-asserted-by":"crossref","first-page":"185","DOI":"10.1006\/jcph.1994.1159","volume":"114","author":"J-P B\u00e9renger","year":"1994","unstructured":"B\u00e9renger J-P (1994) A perfectly matched layer for the absorption of electromagnetic waves. J Comput Phys 114:185\u2013200","journal-title":"J Comput Phys"},{"key":"2770_CR9","doi-asserted-by":"crossref","first-page":"318","DOI":"10.1016\/j.cma.2016.12.014","volume":"317","author":"A Bespalov","year":"2017","unstructured":"Bespalov A, Haberl A, Praetorius D (2017) Adaptive FEM with coarse initial mesh guarantees optimal convergence rates for compactly perturbed elliptic problems. Comput Methods Appl Mech Eng 317:318\u2013340","journal-title":"Comput Methods Appl Mech Eng"},{"key":"2770_CR10","doi-asserted-by":"crossref","first-page":"734","DOI":"10.1137\/08072838X","volume":"48","author":"A Bonito","year":"2010","unstructured":"Bonito A, Nochetto RH (2010) Quasi-optimal convergence rate of an adaptive discontinuous Galerkin method. SIAM J Numer Anal 48:734\u2013771","journal-title":"SIAM J Numer Anal"},{"key":"2770_CR11","doi-asserted-by":"crossref","first-page":"597","DOI":"10.1090\/S0025-5718-06-01930-2","volume":"76","author":"JH Bramble","year":"2007","unstructured":"Bramble JH, Pasciak JE (2007) Analysis of a finite PML approximation for the three dimensional time-harmonic Maxwell and acoustic scattering problems. Math Comput 76:597\u2013614","journal-title":"Math Comput"},{"key":"2770_CR12","doi-asserted-by":"crossref","first-page":"2079","DOI":"10.1090\/S0025-5718-10-02355-0","volume":"79","author":"JH Bramble","year":"2010","unstructured":"Bramble JH, Pasciak JE, Trenev D (2010) Analysis of a finite PML approximation to the three dimensional elastic wave scattering problem. Math Comput 79:2079\u20132101","journal-title":"Math Comput"},{"key":"2770_CR13","doi-asserted-by":"crossref","first-page":"2532","DOI":"10.1137\/15M1018009","volume":"48","author":"F Cakoni","year":"2016","unstructured":"Cakoni F, Guzina BB, Moskow S (2016) On the homogenization of a scalar scattering problem for highly oscillating anisotropic media. SIAM J Math Anal 48:2532\u20132560","journal-title":"SIAM J Math Anal"},{"key":"2770_CR14","doi-asserted-by":"crossref","first-page":"525","DOI":"10.1007\/s00211-003-0468-7","volume":"96","author":"L Cao","year":"2004","unstructured":"Cao L, Cui J (2004) Asymptotic expansions and numerical algorithms of eigenvalues and eigenfunctions of the Dirichlet problem for second order elliptic equations in perforated domains. Numer Math 96:525\u2013581","journal-title":"Numer Math"},{"key":"2770_CR15","doi-asserted-by":"crossref","first-page":"543","DOI":"10.1137\/S0036142900376110","volume":"40","author":"L Cao","year":"2002","unstructured":"Cao L, Cui J, Zhu D (2002) Multiscale asymptotic analysis and numerical simulation for the second order Helmholtz equations with rapidly oscillating coefficients over general convex domains. SIAM J Numer Anal 40:543\u2013577","journal-title":"SIAM J Numer Anal"},{"key":"2770_CR16","doi-asserted-by":"crossref","first-page":"2203","DOI":"10.1016\/j.camwa.2016.08.026","volume":"72","author":"T Chaumont-Frelet","year":"2016","unstructured":"Chaumont-Frelet T (2016) On high order methods for the heterogeneous Helmholtz equation. Comput Math Appl 72:2203\u20132225","journal-title":"Comput Math Appl"},{"key":"2770_CR17","doi-asserted-by":"crossref","first-page":"1503","DOI":"10.1093\/imanum\/drz020","volume":"40","author":"T Chaumont-Frelet","year":"2020","unstructured":"Chaumont-Frelet T, Nicaise S (2020) Wavenumber explicit convergence analysis for finite element discretizations of general wave propagation problems. IMA J Numer Anal 40:1503\u20131543","journal-title":"IMA J Numer Anal"},{"key":"2770_CR18","doi-asserted-by":"crossref","first-page":"1319","DOI":"10.1137\/21M1450136","volume":"55","author":"T Chaumont-Frelet","year":"2023","unstructured":"Chaumont-Frelet T, Spence EA (2023) Scattering by finely layered obstacles: Frequency-explicit bounds and homogenization. SIAM J Math Anal 55:1319\u20131363","journal-title":"SIAM J Math Anal"},{"key":"2770_CR19","doi-asserted-by":"crossref","first-page":"1029","DOI":"10.1137\/19M1255616","volume":"58","author":"T Chaumont-Frelet","year":"2020","unstructured":"Chaumont-Frelet T, Valentin F (2020) A multiscale hybrid-mixed method for the Helmholtz equation in heterogeneous domains. SIAM J Numer Anal 58:1029\u20131067","journal-title":"SIAM J Numer Anal"},{"key":"2770_CR20","doi-asserted-by":"crossref","first-page":"1774","DOI":"10.1137\/21M1421805","volume":"0","author":"T Chaumont-Frelet","year":"2022","unstructured":"Chaumont-Frelet T, Vega P (2022) Frequency-explicit a posteriori error estimates for finite element discretizations of Maxwell\u2019s equations. SIAM J Numer Anal 0:1774\u20131798","journal-title":"SIAM J Numer Anal"},{"key":"2770_CR21","doi-asserted-by":"crossref","first-page":"525","DOI":"10.1007\/s00211-021-01192-w","volume":"148","author":"T Chaumont-Frelet","year":"2021","unstructured":"Chaumont-Frelet T, Ern A, Vohral\u00edk M (2021) On the derivation of guaranteed and p-robust a posteriori error estimates for the Helmholtz equation. Numer Math 148:525\u2013573","journal-title":"Numer Math"},{"key":"2770_CR22","doi-asserted-by":"crossref","first-page":"1","DOI":"10.4310\/CMS.2022.v20.n1.a1","volume":"20","author":"T Chaumont-Frelet","year":"2022","unstructured":"Chaumont-Frelet T, Gallistl D, Nicaise S, Tomezyk J (2022) Wavenumber-explicit convergence analysis for finite element discretizations of time-harmonic wave propagation problems with perfectly matched layers. Commun Math Sci 20:1\u201352","journal-title":"Commun Math Sci"},{"key":"2770_CR23","doi-asserted-by":"crossref","first-page":"673","DOI":"10.1090\/S0025-5718-07-02055-8","volume":"77","author":"J Chen","year":"2008","unstructured":"Chen J, Chen Z (2008) An adaptive perfectly matched layer technique for 3-D time-harmonic electromagnetic scattering problems. Math Comp 77:673\u2013698","journal-title":"Math Comp"},{"key":"2770_CR24","doi-asserted-by":"crossref","first-page":"39","DOI":"10.1016\/S0096-3003(01)00064-9","volume":"130","author":"J Chen","year":"2002","unstructured":"Chen J, Cui J (2002) A multiscale rectangular element method for elliptic problems with entirely small periodic coefficients. Appl Math Comput 130:39\u201352","journal-title":"Appl Math Comput"},{"key":"2770_CR25","doi-asserted-by":"crossref","first-page":"645","DOI":"10.1137\/040610337","volume":"43","author":"Z Chen","year":"2005","unstructured":"Chen Z, Liu X (2005) An adaptive perfectly matched layer technique for time-harmonic scattering problems. SIAM J Numer Anal 43:645\u2013671","journal-title":"SIAM J Numer Anal"},{"key":"2770_CR26","doi-asserted-by":"crossref","first-page":"799","DOI":"10.1137\/S0036142902400901","volume":"41","author":"Z Chen","year":"2003","unstructured":"Chen Z, Wu H (2003) An adaptive finite element method with perfectly matched absorbing layers for the wave scattering by periodic structures. SIAM J Numer Anal 41:799\u2013826","journal-title":"SIAM J Numer Anal"},{"key":"2770_CR27","first-page":"113","volume":"1","author":"Z Chen","year":"2008","unstructured":"Chen Z, Wu X (2008) An adaptive uniaxial perfectly matched layer method for time-harmonic scattering problems. Numer Math Theor Methods Appl 1:113\u2013137","journal-title":"Numer Math Theor Methods Appl"},{"key":"2770_CR28","doi-asserted-by":"crossref","first-page":"2158","DOI":"10.1137\/090750603","volume":"48","author":"Z Chen","year":"2010","unstructured":"Chen Z, Zheng W (2010) Convergence of the uniaxial perfectly matched layer method for time-harmonic scattering problems in two-layer media. SIAM J Numer Anal 48:2158\u20132185","journal-title":"SIAM J Numer Anal"},{"key":"2770_CR29","volume-title":"Waves and fields in inhomogeneous media","author":"WC Chew","year":"1995","unstructured":"Chew WC (1995) Waves and fields in inhomogeneous media. IEEE Press, New York"},{"key":"2770_CR30","doi-asserted-by":"crossref","first-page":"599","DOI":"10.1002\/mop.4650071304","volume":"13","author":"W Chew","year":"1994","unstructured":"Chew W, Weedon W (1994) A 3D perfectly matched medium for modified Maxwell\u2019s equations with stretched coordinates. Microwave Opt Technol Lett 13:599\u2013604","journal-title":"Microwave Opt Technol Lett"},{"key":"2770_CR31","volume-title":"Integral equation methods in scattering theory","author":"D Colton","year":"1983","unstructured":"Colton D, Kress R (1983) Integral equation methods in scattering theory. Wiley, New York"},{"key":"2770_CR32","doi-asserted-by":"crossref","first-page":"1106","DOI":"10.1137\/0733054","volume":"33","author":"W D\u00f6rfler","year":"1996","unstructured":"D\u00f6rfler W (1996) A convergent adaptive algorithm for Poisson\u2019s equation. SIAM J Numer Anal 33:1106\u20131124","journal-title":"SIAM J Numer Anal"},{"key":"2770_CR33","doi-asserted-by":"crossref","first-page":"333","DOI":"10.1515\/cmam-2013-0008","volume":"13","author":"W D\u00f6rfler","year":"2013","unstructured":"D\u00f6rfler W, Sauter S (2013) A posteriori error estimation for highly indefinite Helmholtz problems. Comput Methods Appl Math 13:333\u2013347","journal-title":"Comput Methods Appl Math"},{"key":"2770_CR34","doi-asserted-by":"crossref","first-page":"3344","DOI":"10.1137\/21M1443716","volume":"55","author":"J Galkowski","year":"2023","unstructured":"Galkowski J, Lafontaine D, Spence EA (2023) Perfectly-matched-layer truncation is exponentially accurate at high frequency. SIAM J Math Anal 55:3344\u20133394","journal-title":"SIAM J Math Anal"},{"key":"2770_CR35","doi-asserted-by":"crossref","first-page":"2017","DOI":"10.1051\/m2an\/2017018","volume":"51","author":"X Jiang","year":"2017","unstructured":"Jiang X, Li P, Lv J, Zheng W (2017) An adaptive finite element PML method for the elastic wave scattering problem in periodic structure. ESAIM: M2AN 51:2017\u20132047","journal-title":"ESAIM: M2AN"},{"key":"2770_CR36","doi-asserted-by":"crossref","first-page":"266","DOI":"10.4208\/cicp.OA-2018-0045","volume":"25","author":"X Jiang","year":"2019","unstructured":"Jiang X, Qi Y, Yuan J (2019) An adaptive finite element PML method for the acoustic scattering problems in layered media. Commun Comput Phys 25:266\u2013288","journal-title":"Commun Comput Phys"},{"key":"2770_CR37","unstructured":"Kassali Z (2023) Analysis of a multiscale finite element method applied to the design of photovoltaic cells: a multiscale hybrid-mixed method for the Helmholtz equation with quasi-periodic boundary conditions. Ph.D. thesis, Universit\u00e9 C\u00f4te d\u2019Azur"},{"key":"2770_CR38","doi-asserted-by":"crossref","unstructured":"Lafontaine D, Spence EA, Wunsch J (2022) For most frequencies, strong tapping has a weak effect in frequency-domain scattering. In: LXXIV, communications on pure and applied mathematics, pp 2025\u20132063","DOI":"10.1002\/cpa.21932"},{"key":"2770_CR39","unstructured":"Ma C, Alber C, Scheichl R (2021) Wavenumber explicit convergence of a multiscale gfem for heterogeneous Helmholtz problems. arXiv preprint arXiv:2112.10544"},{"key":"2770_CR40","doi-asserted-by":"crossref","first-page":"1871","DOI":"10.1090\/S0025-5718-10-02362-8","volume":"79","author":"JM Melenk","year":"2010","unstructured":"Melenk JM, Sauter S (2010) Convergence analysis for finite element discretizations of the Helmholtz equation with Dirichlet-to-Neumann boundary conditions. Math Comput 79:1871\u20131914","journal-title":"Math Comput"},{"key":"2770_CR41","doi-asserted-by":"crossref","first-page":"832","DOI":"10.1002\/num.20252","volume":"23","author":"C Michler","year":"2007","unstructured":"Michler C, Demkowicz L, Kurtz J, Pardo D (2007) Improving the performance of perfectly matched layers by means of hp-adaptivity. Numer Methods Partial Differ Equ 23:832\u2013858","journal-title":"Numer Methods Partial Differ Equ"},{"key":"2770_CR42","doi-asserted-by":"crossref","first-page":"317","DOI":"10.1142\/S0218202519500106","volume":"29","author":"A Moiola","year":"2019","unstructured":"Moiola A, Spence EA (2019) Acoustic transmission problems: wavenumber-explicit bounds and resonance-free regions. Math Methods Appl Sci 29:317\u2013354","journal-title":"Math Methods Appl Sci"},{"key":"2770_CR43","doi-asserted-by":"crossref","DOI":"10.1093\/acprof:oso\/9780198508885.001.0001","volume-title":"Finite elements methods for Maxwell equations","author":"P Monk","year":"2003","unstructured":"Monk P (2003) Finite elements methods for Maxwell equations. Oxford University Press, Oxford"},{"key":"2770_CR44","doi-asserted-by":"crossref","first-page":"385","DOI":"10.1137\/16M1108820","volume":"16","author":"Mario Ohlberger","year":"2018","unstructured":"Ohlberger Mario, Verfurth Barbara (2018) A new heterogeneous multiscale method for the Helmholtz equation with high contrast. Multiscale Model Simul 16:385\u2013411","journal-title":"Multiscale Model Simul"},{"key":"2770_CR45","doi-asserted-by":"crossref","first-page":"1005","DOI":"10.1090\/mcom\/3156","volume":"86","author":"D Peterseim","year":"2016","unstructured":"Peterseim D (2016) Eliminating the pollution eect in Helmholtz problems by local subscale correction. Math Comput 86:1005\u20131036","journal-title":"Math Comput"},{"key":"2770_CR46","doi-asserted-by":"crossref","first-page":"2649","DOI":"10.1090\/mcom\/3529","volume":"89","author":"D Peterseim","year":"2020","unstructured":"Peterseim D, Verf\u00fcrth B (2020) Computational high frequency scattering from high-contrast heterogeneous media. Math Comput 89:2649\u20132674","journal-title":"Math Comput"},{"key":"2770_CR47","doi-asserted-by":"crossref","first-page":"483","DOI":"10.1090\/S0025-5718-1990-1011446-7","volume":"54","author":"LR Scott","year":"1990","unstructured":"Scott LR, Zhang S (1990) Finite element interpolation of nonsmooth functions satisfying boundary conditions. Math Comput 54:483\u2013493","journal-title":"Math Comput"},{"key":"2770_CR48","doi-asserted-by":"crossref","first-page":"802","DOI":"10.1021\/acsphotonics.8b01326","volume":"6","author":"I Staude","year":"2019","unstructured":"Staude I, Pertsch T, Kivshar YS (2019) All-dielectric resonant meta-optics lightens up. ACS Photon 6:802\u2013814","journal-title":"ACS Photon"},{"key":"2770_CR49","first-page":"283","volume-title":"Fast and efficient algorithms in computational electromagnetics","author":"FL Teixeira","year":"2001","unstructured":"Teixeira FL, Chew WC (2001) Advances in the theory of perfectly matched layers. In: Chew WC et al (eds) Fast and efficient algorithms in computational electromagnetics. Artech House, Boston, pp 283\u2013346"},{"key":"2770_CR50","doi-asserted-by":"crossref","first-page":"533","DOI":"10.1016\/S0168-9274(98)00026-9","volume":"27","author":"E Turkel","year":"1998","unstructured":"Turkel E, Yefet A (1998) Absorbing PML boundary layers for wave-like equations. Appl Numer Math 27:533\u2013557","journal-title":"Appl Numer Math"},{"key":"2770_CR51","doi-asserted-by":"crossref","first-page":"52","DOI":"10.1038\/nphys1804","volume":"7","author":"J Zhu","year":"2011","unstructured":"Zhu J, Christensen J, Jung J, Martin-Moreno L, Yin X, Fok L, Zhang X, Garcia-Vidal F (2011) A holey-structured metamaterial for acoustic deep-subwavelength imaging. Nat Phys 7:52\u201355","journal-title":"Nat Phys"}],"container-title":["Computational and Applied Mathematics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s40314-024-02770-y.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s40314-024-02770-y\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s40314-024-02770-y.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,11,19]],"date-time":"2024-11-19T05:58:26Z","timestamp":1731995906000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s40314-024-02770-y"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,5,16]]},"references-count":51,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2024,6]]}},"alternative-id":["2770"],"URL":"https:\/\/doi.org\/10.1007\/s40314-024-02770-y","relation":{},"ISSN":["2238-3603","1807-0302"],"issn-type":[{"value":"2238-3603","type":"print"},{"value":"1807-0302","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,5,16]]},"assertion":[{"value":"15 May 2023","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"5 March 2024","order":2,"name":"revised","label":"Revised","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"6 May 2024","order":3,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"16 May 2024","order":4,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The named authors have no conflict of interest, financial or otherwise.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}}],"article-number":"242"}}