1. From Department of Public Health Medicine (H.I.), Institute of Community Medicine, University of Tsukuba, Tennodai, Tuskuba-shi, Ibaraki-ken, Japan; Department of Preventive Medicine (S.B., T.M.), National Cardiovascular Center, Osaka, Japan; Department of Internal Medicine (S.B.), Hanwa Daini Senpoku Hospital, Osaka, Japan; National Institute of Health and Nutrition (S.S.), Tokyo, Japan; Department of Public Health (K.O., M.K.), University of Ehime, Ehime, Japan; Epidemiology and Prevention...