1. Department of Pharmacology; Nihon University School of Dentistry at Matsudo; 2-870-1 Sakaecho-Nishi Matsudo Chiba 271-8587 Japan
2. Department of Oral Surgery; Nihon University School of Dentistry at Matsudo; 2-870-1 Sakaecho-Nishi Matsudo Chiba 271-8587 Japan
3. Professor Emeritus; Nihon University; 4-8-24 Kudan-Minami Chiyoda Tokyo 102-8275 Japan