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Scheike TH, Martinussen T, Zhang MJ.Scheike TH, et al. Among authors: martinussen t.Scand Stat Theory Appl. 2011 Sep;38(3):409-423. doi: 10.1111/j.1467-9469.2010.00720.x.Scand Stat Theory Appl. 2011.PMID: 21927531Free PMC article.