- Correspondence to Professor Yok Lam Kwong, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam Road, Hong Kong, China;
- Received June 5, 2015
- Revised September 25, 2015
- Accepted September 30, 2015
- First published October 23, 2015.
Abstract in Chinese
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- Abstract in Chinese - Online abstract
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