1. Laboratory of Cell Physiology; Institute for Molecular and Cellular Regulation; Gunma University; 3-39-15 Showamachi Maebashi Gunma 371-8512 Japan
2. Department of General Surgical Science; Graduate School of Medicine; Gunma University; Maebashi Gunma Japan
3. Department of Anatomy and Cell Biology; Graduate School of Medicine; Gunma University; Maebashi Gunma Japan
4. Department of Neuromuscular and Developmental Anatomy; Graduate School of Medicine; Gunma University; Maebashi Gunma Japan
5. Office of the President; Gunma University; Maebashi Gunma Japan
6. Department of Surgery; Japanese Red Cross Medical Center; Shibuya Tokyo Japan