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de Groot V, Beckerman H, Uitdehaag BM, Hintzen RQ, Minneboo A, Heymans MW, Lankhorst GJ, Polman CH, Bouter LM; Functional Prognostication and Disability Study Group.de Groot V, et al. Among authors: minneboo a.Arch Phys Med Rehabil. 2009 Sep;90(9):1478-88. doi: 10.1016/j.apmr.2009.03.018.Arch Phys Med Rehabil. 2009.PMID: 19735774Free article.