- Correspondence to Dr Andrew Carson-Stevens, Cochrane Institute of Primary Care and Public Health, 3rd Floor, Neuadd Meirionnydd, School of Medicine, Cardiff University, Cardiff CF14 4YS, UK;
- Received September 28, 2014
- Revised October 10, 2014
- Accepted October 14, 2014
- First published November 5, 2014.
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