RT Journal Article SR Electronic T1 Increased endothelin-1 levels in 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 92 OP 92 DO 10.1136/bjsm.37.1.92-a VO 37 IS 1 A1 I N Legakis A1 T Mantzouridis A1 T Mountokalakis YR 2003 UL http://bjsm.bmj.com/content/37/1/92.2.abstract AB