The placebo effect and its determinants in osteoarthritis: meta-analysis of randomised controlled trials |
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Authors: | Zhang W Robertson J Jones A C Dieppe P A Doherty M |
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Affiliation: | Academic Rheumatology, University of Nottingham, Clinical Sciences Building, City Hospital, Nottingham NG5 1PB, UK. weiya.zhang@nottingham.ac.uk |
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