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Aguilar-Raab C, Jarczok MN, Warth M, Stoffel M, Winter F, Tieck M, Berg J, Negi LT, Harrison T, Pace TWW, Ditzen B.Aguilar-Raab C, et al. Among authors: winter f.BMJ Open. 2018 Oct 4;8(9):e020448. doi: 10.1136/bmjopen-2017-020448.BMJ Open. 2018.PMID: 30287601Free PMC article.