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Wittmann M, Dinich J, Merrow M, Roenneberg T.Wittmann M, et al.Chronobiol Int. 2006;23(1-2):497-509. doi: 10.1080/07420520500545979.Chronobiol Int. 2006.PMID: 16687322Free article.
Wittmann M, Paulus M, Roenneberg T.Wittmann M, et al.Subst Use Misuse. 2010;45(1-2):15-30. doi: 10.3109/10826080903498952.Subst Use Misuse. 2010.PMID: 20025436
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Wittmann M, Vollmer T, Schweiger C, Hiddemann W.Wittmann M, et al.Palliat Support Care. 2006 Dec;4(4):357-63. doi: 10.1017/s1478951506060469.Palliat Support Care. 2006.PMID: 17133895
Petru R, Wittmann M, Nowak D, Birkholz B, Angerer P.Petru R, et al. Among authors: wittmann m.Int Arch Occup Environ Health. 2005 Mar;78(2):109-16. doi: 10.1007/s00420-004-0585-3. Epub 2005 Feb 22.Int Arch Occup Environ Health. 2005.PMID: 15726392
Wittmann M, Carter O, Hasler F, Cahn BR, Grimberg U, Spring P, Hell D, Flohr H, Vollenweider FX.Wittmann M, et al.J Psychopharmacol. 2007 Jan;21(1):50-64. doi: 10.1177/0269881106065859. Epub 2006 May 19.J Psychopharmacol. 2007.PMID: 16714323Clinical Trial.
Fink M, Churan J, Wittmann M.Fink M, et al. Among authors: wittmann m.Brain Lang. 2006 Jul;98(1):1-11. doi: 10.1016/j.bandl.2005.12.005. Epub 2006 Feb 7.Brain Lang. 2006.PMID: 16460793