RT Journal Article SR Electronic T1 Randomised controlled trials for complex physiotherapy interventions are perfectly possible 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 950 OP 951 DO 10.1136/bjsports-2017-098612 VO 52 IS 15 A1 Leonardo Oliveira Pena Costa YR 2018 UL http://bjsm.bmj.com/content/52/15/950.abstract AB