- Correspondence to Professor Wen-Chien Ko, Department of Internal Medicine, National Cheng Kung University Hospital, No. 138, Sheng Li Road, Tainan 70403, Taiwan;
- Received September 5, 2012
- Revised November 12, 2012
- Accepted November 12, 2012
- Final version accepted November 13, 2012
- First published December 14, 2012.
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