1. Yonsei University, College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Incheon, Korea
2. Department of Pediatrics, College of Medicine, Yonsei University, Severance Children’s Hospital, Seoul, Korea
3. Yonsei University, Wonju College of Medicine, Wonju, Korea
4. Konyang University, Department of Hospital Management, Daejon, Korea
5. Yonsei University, Graduate School of Public Health, Seoul, Korea
6. Merck, West Point, PA, USA