1. Department of Family Medicine, Medical College, Catholic University of Korea, Seoul, Korea.
2. Department of Family Medicine, College of Medicine, Pochon CHA University, Seongnam, Korea.
3. Department of Complementary Medicine, St. Mary's Hospital, the Catholic University of Korea, Seoul, Korea.
4. Institute of Medical Science, School of Medicine, Korea University, Seoul, Korea.
5. Department of Radiation Oncology, Ajou University School of Medicine, Suwon, Korea.
6. Department of Dermatology, Seoul National University Bundang Hospital, Seongnam, Korea.
7. Department of Preventive Medicine & public Health, Ajou University School of Medicine, Suwon, Korea.
8. Department of Integrative Medicine, Korea University School of Medicine, Seoul, Korea.