1. From the Osaka Medical Center for Health Science and Promotion (S.S., A.K., H. Imano, M.K., T.O., M.Y., M.N., Y.N., T.S.) and the School of Public Health (H. Iso, H.N.), Department of Social and Environmental Medicine, Osaka University, Graduate School of Medicine, Osaka, and the Department of Public Health Medicine (T.T., K.Y.), Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan.