1. Department of Internal Medicine, Far-Eastern Memorial Hospital, New Taipei, Taiwan.
2. Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, Taiwan.
3. Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, Taiwan.
4. Department of Radiology, Far-Eastern Memorial Hospital, New Taipei, Taiwan.
5. Department of Pathology and Forensic Medicine, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan.