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Holländer N, Sauerbrei W, Schumacher M.Holländer N, et al. Among authors: sauerbrei w.Stat Med. 2004 Jun 15;23(11):1701-13. doi: 10.1002/sim.1611.Stat Med. 2004.PMID: 15160403
Buchholz A, Sauerbrei W.Buchholz A, et al. Among authors: sauerbrei w.Biom J. 2011 Mar;53(2):308-31. doi: 10.1002/bimj.201000159. Epub 2011 Feb 17.Biom J. 2011.PMID: 21328605
Boulesteix AL, Guillemot V, Sauerbrei W.Boulesteix AL, et al. Among authors: sauerbrei w.Biom J. 2011 Jul;53(4):673-88. doi: 10.1002/bimj.201000189. Epub 2011 May 30.Biom J. 2011.PMID: 21626533