1. Institute of Chinese Medical Science, China Medical College, Taichung 400, Taiwan, ROC
2. Deparment of Microbiology, China Medical College, Taichung 400, Taiwan, ROC
3. Department of Surgery, China Medical College Hospital, Taichung 400, Taiwan, ROC
4. Department of Pharmacology, China Medical College, Taichung 400, Taiwan, ROC
5. Department of Pediatric, China Medical College Hospital, Taichung 400, Taiwan, ROC