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When placebo controlled trials are essential and equivalence trials are inadequate |
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| Authors: | Martin R Tramèr D John M Reynolds R Andrew Moore Henry J McQuay |
| Institution: | aPain Research and Nuffield Department of Anaesthetics, University of Oxford, Oxford Radcliffe Hospital, The Churchill, Headington, Oxford OX3 7LJ, bDepartment of Clinical Pharmacology, Radcliffe Infirmary, Oxford OX2 6HE |
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