1. Vaccine Bio Research Institute, College of Medicine, The Catholic University of Korea, Seoul, the Republic of Korea
2. Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, the Republic of Korea
3. Department of Pediatrics, College of Medicine, The Catholic University of Korea, Seoul, the Republic of Korea
4. School of Pharmacy, Sungkyunkwan University, Suwon, the Republic of Korea
5. SK Chemicals Co. Ltd., Seongnam, Gynuggi-do, the Republic of Korea