- Correspondence to Professor Pak C Ng, Department of Paediatrics, Prince of Wales Hospital, The Chinese University of Hong Kong, 6th Floor, Lui Che Woo Clinical Sciences Building, Shatin, N.T., Hong Kong;
- Received October 10, 2014
- Revised November 21, 2014
- Accepted December 6, 2014
- First published December 24, 2014.
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