RT Journal Article SR Electronic T1 Methods matter: clinical prediction models will benefit sports medicine practice, but only if they are properly developed and validated 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 1319 OP 1321 DO 10.1136/bjsports-2021-104329 VO 55 IS 23 A1 Garrett S Bullock A1 Tom Hughes A1 Jamie C Sergeant A1 Michael J Callaghan A1 Richard Riley A1 Gary Collins YR 2021 UL http://bjsm.bmj.com/content/55/23/1319.abstract AB