- Correspondence to Dr Dermot O'Reilly, Centre for Public Health, School of Medicine, Dentistry and Biomedical Science, Institute of Clinical Sciences, Block B, Queens University Belfast, Royal Victoria Hospital, Grosvenor Road, Belfast BT12 6BJ, Northern Ireland;
- Received June 1, 2015
- Revised September 7, 2015
- Accepted October 1, 2015
- First published October 16, 2015.
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