- Correspondence to Prof Samy Suissa, Centre for Clinical Epidemiology, Jewish General Hospital, 3755 Cote Ste-Catherine, Montreal, Québec, Canada H3T 1E2;
- Received October 14, 2012
- Revised August 16, 2013
- Accepted August 25, 2013
- First published October 15, 2013.
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