1. Department of Intensive Care Medicine, Chi-Mei Medical Center, Tainan, Taiwan
2. Department of Internal Medicine, Cardinal Tien Hospital, Taipei County, Taiwan
3. Department of Internal Medicine, Taipei County Hospital, Taipei County, Taiwan
4. Department of Internal Medicine, Far Eastern Memorial Hospital, Taipei, Taiwan
5. Departments of Internal Medicine
6. Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan