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Griffin XL, Parsons N, Achten J, Costa ML.Griffin XL, et al. Among authors: costa ml.BMC Musculoskelet Disord. 2010 Aug 17;11:184. doi: 10.1186/1471-2474-11-184.BMC Musculoskelet Disord. 2010.PMID: 20716348Free PMC article.Clinical Trial.
Kearney RS, Achten J, Parsons NR, Costa ML.Kearney RS, et al. Among authors: costa ml.BMC Med Res Methodol. 2011 Apr 5;11:39. doi: 10.1186/1471-2288-11-39.BMC Med Res Methodol. 2011.PMID: 21466700Free PMC article.Clinical Trial.