1. Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
2. Department of Laboratory Medicine, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
3. Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Children’s Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
4. Department of Pediactrics, Taichung Veterans General Hospital, 407 Taichung, Taiwan, ROC