1. Department of Value Demonstration & Access, Shire Pharmaceuticals Korea, Seoul, Republic of Korea
2. Department of nursing, College of Nursing, Eulji University, Seongnam, Republic of Korea
3. Institute of Health Services Research, Yonsei University, Seoul, Republic of Korea
4. Department of Biostatistics, Graduate School of Public Health, Yonsei University, Seoul, Republic of Korea
5. Department of Preventive Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, Republic of Korea