RT Journal Article SR Electronic T1 Correction: Serum androgen levels and their relation to performance in track and field: mass spectrometry results from 2127 observations in male and female elite athletes 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 e7 OP e7 DO 10.1136/bjsports-2017-097792corr1 VO 55 IS 17 YR 2021 UL http://bjsm.bmj.com/content/55/17/e7.abstract AB