- Correspondence to Dr Roger C M Ho,Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore,Level 9 NUHS Tower Block,1E Kent Ridge Road, Singapore 119228;
- Received July 30, 2012
- Revised October 12, 2012
- Accepted November 14, 2012
- First published December 12, 2012.
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