- Correspondence to Dr Neil R Smith, Centre for Psychiatry, Wolfson Institute of Preventive Medicine, Barts and The London School of Medicine and Dentistry, Charterhouse Square, London EC1M 6BQ, UK;
- Received April 2, 2015
- Revised November 17, 2015
- Accepted November 19, 2015
- First published December 15, 2015.
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