- Correspondence to Professor Kai Chow Choi, The Nethersole School of Nursing, The Chinese University of Hong Kong, Esther Lee Building 732, Shatin, N.T., Hong Kong, PR China;
- Received May 24, 2013
- Revised December 23, 2013
- Accepted January 9, 2014
- First published January 30, 2014.
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