RT Journal Article SR Electronic T1 Relative energy deficiency in sport (RED-S) 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 1570 OP 1571 DO 10.1136/bjsports-2017-097700 VO 51 IS 21 A1 Siobhan M Statuta A1 Irfan M Asif A1 Jonathan A Drezner YR 2017 UL http://bjsm.bmj.com/content/51/21/1570.abstract AB