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Doll D, Matevossian E, Luedi MM, Schneider R, van Zypen D, Novotny A.Doll D, et al. Among authors: luedi mm.Med Princ Pract. 2015;24(6):571-7. doi: 10.1159/000437361. Epub 2015 Sep 4.Med Princ Pract. 2015.PMID: 26334688Free PMC article.