RT Journal Article SR Electronic T1 Oxford handbook of rheumatology JF British Journal of Sports Medicine JO Br J Sports Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP 310 OP 310 DO 10.1136/bjsm.2007.041772 VO 42 IS 4 A1 Humphries, D YR 2008 UL http://bjsm.bmj.com/content/42/4/310.2.abstract AB