1. Central Regional Center, Centers for Disease Control, Taichung, Taiwan.
2. Department of Public Health, China Medical University, Taichung, Taiwan.
3. Center for Research, Diagnostics and Vaccine Development, Centers for Disease Control, Taipei, Taiwan.
4. Center of General Education, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan.
5. Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan.
6. Department of Pediatrics, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan.