1. From the Department of Public Health, Dokkyo Medical University School of Medicine, Shimotugagun-Mibu (T.S., T.M.); Ibaraki Health Plaza, Ibaraki Health Service Association, Mito (T.S., J.G., H.O.); Public Health, Department of Social and Environmental Medicine, Osaka University, Graduate School of Medicine, Osaka (H.I.); Department of Public Health Medicine, Institute of Community Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba (K.Y.); Department of Health...