1. Division of Infectious Disease; Department of Internal Medicine, Tungs' Taichung Metro Harbor Hospital; Taichung
2. Departments of Medical Research
3. Intensive Care Medicine; Chi-Mei Medical Center; Yungkang City Tainan
4. Department of Medicine; Taipei Medical University; Taipei
5. Division of Infectious Disease; Chang Bing Show Chwan Memorial Hospital; Changhua County
6. Institute of Medical Science and Department of Microbiology; China Medical University and Hospital; Taichung, Taiwan