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Yokoyama Kazuhito

E-mail: kyokoya@juntendo.ac.jp

Dr. Yokoyama, MD (Sendai, 1978), DrMedSc (Tokyo, 1982), graduated at Tohoku University School of Medicine, Japan, in 1978. He also completed the Graduate School of Medicine, The University of Tokyo, Japan, in 1982. He spent one year at Boston University School of Medicine with Professor Robert Feldman (1987-88), conducting a study by the use of a novel computer-based technique (distribution of nerve conduction velocities) as well as neurobehavioral test batteries. He served as the Secretary of the 4th International Symposium on Neurobehavioral Methods and Effects in Occupational and Environmental Health, Tokyo, in 1991. He was appointed as Professor and Chairman (Mie University) in 2003, and then "head-hunted" by Juntendo University in 2006, the oldest western-style medical school in Japan, which was established in 1838. He is now an editor of Industrial Health. Besides the effects of low level exposures to occupational chemical hazards such as lead and solvents, he published several papers on late neurological effects seen in the victims of Tokyo Subway Sarin Attack in 1995 as well as on the survival analysis of the victims of air pollution called Yokkaichi Asthma, which is known as one of major four environmental pollution in Japan such as Minamata disease. Also, he has carried out research projects funded by the Ministry of Health, Welfare and Labor of Japan: (1) assessment and prevention of mental illness among workers (including the development of Brief Questionnaire on Job Stress, which is widely used in Japan), (2) early intervention of psychosis among adolescents, and (3) estimation of national costs of psychiatric illness in Japan (of which results revealed that the total of annual social costs exceeded eleven trillion Japanese Yen). He recently started a new project funded by the Ministry of Health, Welfare and Labor of Japan on the evaluation and cost-effect analysis of programs for prevention of workers from mental illness. As international collaboration studies, he has surveyed reproductive and developmental effects of trace metals such as lead and arsenic in Tehran, Shanghai, Dalian, and Jakarta, and neurological effects of pesticides on farmers in Kelantan, Malaysia.

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