1. Integrated Physiology Section, Department of Basic Medical Science; National Institute for Minamata Disease; Minamata Kumamoto Japan
2. Department of Clinical Medicine; National Institute for Minamata Disease; Minamata Kumamoto Japan
3. Department of Environmental Science and Epidemiology; National Institute for Minamata Disease; Minamata Kumamoto Japan
4. Department of Cell Pathology, Graduate School of Medical Sciences; Kumamoto University; Kumamoto Japan
5. Health and Nursing Facilities for the Aged, Jushindai, Shinwakai; Tamana Kumamoto Japan