RT Journal Article SR Electronic T1 Stretching the evidence behind tennis elbow: mobile app user guide 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 e5 OP e5 DO 10.1136/bjsports-2017-098093 VO 52 IS 19 A1 Luke J Heales A1 Michele Lastella A1 Brooke K Coombes A1 Bill Vicenzino YR 2018 UL http://bjsm.bmj.com/content/52/19/e5.abstract AB