Affiliation: | Department of Physics, Faculty of Science and Technology, Sophia University, Chiyoda-ku, Tokyo 102, Japan;Department of Physics, the Jikei University School of Medicine, Chofu-shi, Tokyo 182, Japan;Department of Physiology, Faculty of Hygienic Technology, College of Environmental Health, Azabu University, Sagamihara-shi, Kanagawa 229, Japan |