RT Journal Article SR Electronic T1 Youth sports injury prevention: keep calm and play on 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 145 OP 146 DO 10.1136/bjsports-2016-096648 VO 51 IS 3 A1 Cynthia R LaBella A1 Gregory D Myer YR 2017 UL http://bjsm.bmj.com/content/51/3/145.abstract AB