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van der Heijden AA, de Bruijne MC, Feenstra TL, Dekker JM, Baan CA, Bosmans JE, Bot SD, Donker GA, Nijpels G.van der Heijden AA, et al. Among authors: bot sd.BMC Health Serv Res. 2014 Jun 25;14:280. doi: 10.1186/1472-6963-14-280.BMC Health Serv Res. 2014.PMID: 24966055Free PMC article.Clinical Trial.
Welschen LM, Bot SD, Dekker JM, Timmermans DR, van der Weijden T, Nijpels G.Welschen LM, et al. Among authors: bot sd.BMC Public Health. 2010 Aug 5;10:457. doi: 10.1186/1471-2458-10-457.BMC Public Health. 2010.PMID: 20687924Free PMC article.Clinical Trial.