- Correspondence to Dr Gary Tse, Department of Medicine and Therapeutics, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, China; and Professor Martin C S Wong, JC School of Public Health and Primary Care The Chinese University of Hong Kong Hong Kong China ;
- Received November 14, 2017
- Revised February 19, 2018
- Accepted February 21, 2018
- First published March 6, 2018.
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