- Correspondence to Dr Eurah Goh, Department of Family Medicine, Kangwon National University Hospital, 26 Kangwon Daehakro, Chuncheon, Kangwon Province 200-722, South Korea;
- Received October 24, 2010
- Revised May 12, 2011
- Accepted May 24, 2011
- First published June 27, 2011.
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