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Houtzager BA, Grootenhuis MA, Hoekstra-Weebers JE, Last BF.Houtzager BA, et al. Among authors: grootenhuis ma.Child Care Health Dev. 2005 Jan;31(1):75-87. doi: 10.1111/j.1365-2214.2005.00459.x.Child Care Health Dev. 2005.PMID: 15658968
De Boer M, Grootenhuis M, Derkx B, Last B.De Boer M, et al.Inflamm Bowel Dis. 2005 Apr;11(4):400-6. doi: 10.1097/01.mib.0000164024.10848.0a.Inflamm Bowel Dis. 2005.PMID: 15803032
Grootenhuis MA, de Boone J, van der Kooi AJ.Grootenhuis MA, et al.Health Qual Life Outcomes. 2007 Jun 6;5:31. doi: 10.1186/1477-7525-5-31.Health Qual Life Outcomes. 2007.PMID: 17553127Free PMC article.