1. University of Hawaii Internal Medicine Residency Program, Honolulu, HI, USA;
2. Faculty of Medicine, Chulalongkorn University Hospital, Bangkok, Thailand;
3. Department of Internal Medicine, University of Miami, Miami, FL, USA;
4. Department of Medicine, Einstein Medical Center, Philadelphia, PA, USA;
5. Department of Medicine, Phramongkutklao College of Medicine, Bangkok, Thailand;
6. Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand