- Correspondence to Dr Pierre Ernst, Centre for Clinical Epidemiology, Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Cote Ste-Catherine, Montreal, Quebec H3T 1E2, Canada;
- Received February 27, 2012
- Revised November 29, 2012
- Accepted December 6, 2012
- First published January 7, 2013.
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