- Correspondence to Dr Kiyuk Chang Cardiovascular Center, Seoul St Mary's Hospital, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul 137-701, Republic of Korea; and Dr Youngkeun Ahn, Cardiovascular Center, Chonnam National University Hospital, Chonnam National University, 671 Jebongro, Dong-gu, Gwanju 501-757, Republic of Korea; email@example.com
- Received October 22, 2013
- Revised December 3, 2013
- Accepted December 16, 2013
- First published January 6, 2014.
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