- Correspondence to Dr Hyun Kim, Department of Emergency Medicine, Wonju College of Medicine, Yonsei University, 162 Ilsandong, Wonju, Kangwon 220-701, Republic of Korea;
- Received June 4, 2013
- Revised July 11, 2013
- Accepted July 18, 2013
- First published August 19, 2013.
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