1. Division of Infectious Diseases, Department of Internal Medicine, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan;
2. Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan;
3. Taiwan Centers for Disease Control, Ministry of Health and Welfare, Taipei, Taiwan;
4. Department of Respiratory Therapy, Chang Gung Memorial Hospital, Taoyuan, Taiwan;
5. Department of Thoracic Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan;
6. Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Children’s Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan