1. Division of Longevity and Biofunctional Medicine, School of Oriental Medicine, Pusan National University, Mulgeum, Yangsan, Kyungnam 626-770, Republic of Korea
2. Department of Occupational Therapy, Yonsei University, Wonju, Republic of Korea
3. Department of Psychology, Yonsei University, Seoul, Republic of Korea
4. Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
5. Missouri Institute of Mental Health, School of Medicine, University of Missouri-Columbia, St Louis, MO, USA