TY - JOUR AU - Williams Chris AU - Kamper S. AD - The George Institute for Global Health, Musculoskeletal Division, University of Sydney, Sydney, New South Wales, Australia. AN - 22893511 BT - British Journal of Sports Medicine DP - NLM ET - 2012/08/16 LA - Eng N1 - Kamper, Steven JWilliams, Christopher MichaelBr J Sports Med. 2012 Aug 14. PY - 2012 SN - 1473-0480 (Electronic)0306-3674 (Linking) T2 - British Journal of Sports Medicine TI - The placebo effect: powerful, powerless or redundant? ER -