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Bax L, Yu LM, Ikeda N, Tsuruta H, Moons KG.Bax L, et al.BMC Med Res Methodol. 2006 Oct 13;6:50. doi: 10.1186/1471-2288-6-50.BMC Med Res Methodol. 2006.PMID: 17038197Free PMC article.
Bax L, Yu LM, Ikeda N, Moons KG.Bax L, et al.BMC Med Res Methodol. 2007 Sep 10;7:40. doi: 10.1186/1471-2288-7-40.BMC Med Res Methodol. 2007.PMID: 17845719Free PMC article.