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van de Ven G, Draskovic I, Adang EM, Donders RA, Post A, Zuidema SU, Koopmans RT, Vernooij-Dassen MJ.van de Ven G, et al. Among authors: zuidema su.BMC Geriatr. 2012 Jan 3;12:1. doi: 10.1186/1471-2318-12-1.BMC Geriatr. 2012.PMID: 22214264Free PMC article.Clinical Trial.