1. From The Netherlands Organization for Applied Scientific Research–Quality of Life (M.W., J.F.P.B., N.M.M.P., R.K., L.M.H., P.C.N.R.), Department of Biomedical Research, Gaubius Laboratory, Leiden, the Netherlands; and Departments of General Internal Medicine, Endocrinology, and Metabolic Diseases (M.W., J.F.P.B., J.A.R., L.M.H., P.C.N.R.), Cardiology (N.M.M.P., L.M.H.), Rheumatology (G.J.D.v.M.), and Vascular Surgery (R.K.), Leiden University Medical Center, Leiden, the Netherlands.