1. Internal Medicine Residency Program, University of Hawaii, Honolulu, HI, USA;
2. Ramathibodi Hospital, Mahidol University, Bangkok, Thailand;
3. Department of Thoracic Surgery, Vanderbilt University Medical Center, Nashville, TN, USA;
4. Division of Internal Medicine, Mayo Clinic, Rochester, MN, USA;
5. Department of Medicine, University of Mississippi Medical Center, Jackson, MS, USA