1. Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
2. Department of Medicine, Graduate School, Kyung Hee University, Seoul 130-701, Republic of Korea
3. Department of Medical Education and Medical Humanities, College of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
4. Department of Preventive Medicine, College of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
5. Department of Preventive Medicine, College of Korean Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea