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 bjsports-2017-098612 DO 10.1136/bjsports-2017-098612 A1 Leonardo Oliveira Pena Costa YR 2018 UL http://bjsm.bmj.com/content/early/2018/01/02/bjsports-2017-098612.abstract AB