1. Department of Nephrology, Chang Gung Memorial Hospital, 5 Fu-Shin Street, Kwei-Shan, Taoyuan 333, Taiwan
2. College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
3. Department of Hepatogastroenterology and Liver Research Unit, Chang Gung Memorial Hospital, Keelung 204, Taiwan
4. Department of Pathology, Chang Gung Memorial Hospital, Linkou 333, Taiwan
5. Department of Dermatology, Chang Gung Memorial Hospital, Linkou 333, Taiwan