1. From the Department of Internal Medicine, Päijät-Häme Central Hospital, Lahti, Finland (A.E., T.K., O.A.); Division of Cardiology, Heart and Lung Center, Helsinki University Central Hospital (A.L.A.) and Department of Health, Functional Capacity and Welfare, National Institute of Health and Welfare (H.A.R., P.K.), Helsinki, Finland; and Department on Internal Medicine, Institute of Clinical Medicine, Medical Research Center Oulu, University Hospital & University of Oulu, Oulu, Finland (J.T.T., M...