RT Journal Article SR Electronic T1 A–Z of nutritional supplements: dietary supplements, sports nutrition foods and ergogenic aids for health and performance—Part 29 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 155 OP 156 DO 10.1136/bjsports-2011-090836 VO 46 IS 2 A1 M K Ranchordas A1 N Burd A1 D S Senchina A1 L M Burke A1 S J Stear A1 L M Castell YR 2012 UL http://bjsm.bmj.com/content/46/2/155.abstract AB