1. Department of Internal Medicine, Tainan Municipal Hospital, Tainan, Taiwan
2. Department of Medical Imaging and Radiological Sciences, I-Shou University and Division of Cardiology, Department of Internal Medicine, E-Da Hospital, Kaohsiung, Taiwan
3. Department of Internal Medicine, National Cheng Kung University College of Medicine and Hospital, Tainan, Taiwan
4. Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan