1. Integrated Physiology Section, Department of Basic Medical Science; National Institute for Minamata Disease; 4058-18 Hama, Minamata Kumamoto 867-0008 Japan
2. Center for Health and Environmental Risk Research; National Institute for Environmental Studies; 16-2 Onogawa, Tsukuba Ibaraki 305-8506 Japan
3. Graduate School of Environmental and Symbiotic Science; Prefectural University of Kumamoto; 3-1-100 Tsukide, Higashi-ku Kumamoto 862-8502 Japan
4. Department of Pharmacology; Ehime University Graduate School of Medicine; Ehime 791-0295 Japan
5. Department of Pharmacology; Hoshi University School of Pharmacy and Pharmaceutical Sciences; Tokyo 142-8501 Japan
6. Department of Clinical Medicine; National Institute for Minamata Disease; 4058-18 Hama, Minamata Kumamoto 867-0008 Japan
7. Department of Cell Pathology, Graduate School of Medical Sciences; Kumamoto University; 1-1-1 Honjo, Chuo-ku Kumamoto 860-8556 Japan
8. Health and Nursing Facilities for the Aged; Jushindai, Shinwakai; 272 Ikurakitakata, Tamana Kumamoto 865-0041 Japan