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McLean-Tooke A, Aldridge C, Waugh S, Spickett GP, Kay L.McLean-Tooke A, et al.Rheumatology (Oxford). 2009 Aug;48(8):867-71. doi: 10.1093/rheumatology/kep101. Epub 2009 May 15.Rheumatology (Oxford). 2009.PMID: 19447771Review.