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Marra CA, Cibere J, Grubisic M, Grindrod KA, Gastonguay L, Thomas JM, Embley P, Colley L, Tsuyuki RT, Khan KM, Esdaile JM.Marra CA, et al. Among authors: khan km.Arthritis Care Res (Hoboken). 2012 Dec;64(12):1837-45. doi: 10.1002/acr.21763.Arthritis Care Res (Hoboken). 2012.PMID: 22930542Free article.Clinical Trial.
Khan KM, Windt A, Davis JC, Dawes M, Liu-Ambrose T, Madden K, Marra CA, Housden L, Hoppmann C, Adams DJ.Khan KM, et al.BMJ Open. 2015 Jul 13;5(7):e007441. doi: 10.1136/bmjopen-2014-007441.BMJ Open. 2015.PMID: 26169803Free PMC article.Clinical Trial.