1. Department of Microbiology and Immunology, School of Medicine, China Medical University, Taichung, Taiwan, ROC.
2. Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan, ROC.
3. Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan, ROC.
4. Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan, ROC.