| Affiliation: | 1. Department of Human Ecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;2. Department of Anthropology, University of Washington, Box 353100, Seattle, WA 98195-3100, USA;3. Environmental Epidemiology Section, Center for Environmental Health Sciences, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan;4. Nishihata Ear, Nose and Throat Clinic, 2-10-1 Yuraku-cho, Chiyoda-ku, Tokyo, 100-0006, Japan;5. Center for Regional Environmental Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba-City, Ibaraki 305-8506, Japan |
