1. Department of Preventive Medicine, Hanyang University College of Medicine, Seoul, Korea
2. Program in Regional Information, Department of Agricultural Economics and Rural Development, Seoul National University, Seoul, Korea
3. Department of Psychology, Sungkyunkwan University, Seoul, Korea
4. Program in Agricultural and Forest Meteorology, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Korea
5. Division of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
6. AIDS Research Institute, Yonsei University College of Medicine, Seoul, Korea
7. Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
8. Division of Infectious Disease, Department of Internal Medicine, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea