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Pijls BG, Dekkers OM, Middeldorp S, Valstar ER, van der Heide HJ, Van der Linden-Van der Zwaag HM, Nelissen RG.Pijls BG, et al. Among authors: nelissen rg.BMC Musculoskelet Disord. 2011 Jul 22;12:173. doi: 10.1186/1471-2474-12-173.BMC Musculoskelet Disord. 2011.PMID: 21781327Free PMC article.