RT Journal Article SR Electronic T1 Henry K Beecher: pain, belief and truth at the bedside. The powerful placebo, ethical research and anaesthesia safety JF Quality and Safety in Health Care JO Qual Saf Health Care FD BMJ Publishing Group Ltd SP 466 OP 468 DO 10.1136/qshc.2010.042200 VO 19 IS 5 A1 Mark Best A1 Duncan Neuhauser YR 2010 UL http://qualitysafety.bmj.com/content/19/5/466.abstract AB