- Correspondence to Dr Alex Hardip Sohal, Queen Mary University of London, Centre for Primary Care and Public Health, Barts and The London School of Medicine and Dentistry, Yvonne Carter Building, 58 Turner Street, London E1 2AB, UK;
- Received September 21, 2016
- Revised February 27, 2017
- Accepted March 16, 2017
- First published July 19, 2017.
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