1. From the Department of Medicine (L.J., T.R.), Department of Public Health and General Practice (J.K.), University of Oulu, and Department of Public Health (J.K.), University of Helsinki, Finland; Department of Clinical Physiology (M.J.J., J.O.T., M.S., J.H., O.T.R.), Turku University Central Hospital, and Research and Development Centre (J.M.), Social Insurance Institution, Turku, Finland; Division of Epidemiology (N.H., L.A.), Institute of Environmental Medicine, Karolinska Institute, Sweden; and...