1. Department of Physiology, School of Medicine, Pusan National University, Pusan (602-739), Korea.
2. Medical Research Center for Ischemic Tissue Engineering, Pusan National University, Pusan (602-739), Korea.
3. Medical Research Institute, Pusan National University, Pusan (602-739), Korea.
4. Department of Plastic Surgery, School of Medicine, Pusan National University, Pusan (602-739), Korea.