1. Department of Preventive Medicine, Eulji University School of Medicine, Daejeon, Korea.
2. Department of Preventive Medicine & Public Health, College of Medicine, Kwandong University, Gangneung, Korea.
3. Department of Preventive Medicine, School of Medicine, Inje University, Busan, Korea.
4. Department of Preventive Medicine, College of Medicine, Konyang University, Daejeon, Korea.
5. Department of Preventive Medicine, School of Medicine, Keimyung University, Daegu, Korea.
6. Department of Preventive Medicine, Institute for Poverty Alleviation & International Development, Yonsei University Wonju College of Medicine, Wonju, Korea.
7. Deparment of Preventive Medicine, Medical College Soonchunhyang University, Cheonan, Korea.
8. Department of Preventive Medicine, Wonkwang University Medical School, Iksan, Korea.