1. Division of Cardiology, Department of Internal Medicine, Ramathibodi Hospital, Bangkok, Thailand.
2. Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan ROC.
3. Division of Cardiology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
4. Department of Cardiology, Sarawak General Hospital, Kuching, Malaysia.
5. Department of Cardiology, Queen Elizabeth Hospital 2, Sabah, Malaysia.
6. Department of Internal Medicine, College of Medicine, Chungbuk National University, Cheongju, Korea.