Institution: | 1.College of Nursing, School of Medicine, Kyungpook National University, Daegu 702-422, Korea;2.Department of Preventive Medicine, School of Medicine, Kyungpook National University, Daegu 702-422, Korea;3.Department of Anatomy and BK21 Plus KNU Biomedical Convergence Program, School of Medicine, Kyungpook National University, Daegu 702-422, Korea |