RT Journal Article SR Electronic T1 A to Z of nutritional supplements: dietary supplements, sports nutrition foods and ergogenic aids for health and performance—Part 32 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 454 OP 456 DO 10.1136/bjsports-2012-091100 VO 46 IS 6 A1 S M Phillips A1 L Breen A1 M Watford A1 L M Burke A1 S J Stear A1 L M Castell YR 2012 UL http://bjsm.bmj.com/content/46/6/454.abstract AB