- Correspondence to Dr Chung-Kan Peng, Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, No. 325, Sec.2, Chenggong Rd., Neihu District, Taipei City 114, Taiwan;
- Received July 2, 2015
- Revised July 20, 2015
- Accepted September 8, 2015
- First published September 23, 2015.
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