- Correspondence to Dr. Chih-Ming Lin, Department of Thoracic Surgery, Lotung Poh-Ai Hospital, No. 83, Nanchang St., Luodong Township, Yilan County 265, Taiwan;
- Received June 25, 2012
- Revised January 8, 2013
- Accepted January 18, 2013
- First published February 13, 2013.
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