RT Journal Article SR Electronic T1 What causes cam deformity and femoroacetabular impingement: still too many questions to provide clear answers 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 263 OP 264 DO 10.1136/bjsports-2015-094773 VO 50 IS 5 A1 Rintje Agricola A1 Harrie Weinans YR 2016 UL http://bjsm.bmj.com/content/50/5/263.abstract AB