1. Departments of Internal Medicine (N.C.-O., M.C.C.-B., L.O., B.H.C.S., H.T., F.R., A.G.U., M.C.Z.), 3000 CA Rotterdam, The Netherlands
2. Epidemiology (M.C.C.-B., O.H.F., B.H.C.S., G.G.B., L.L., A.H., F.R., A.G.U., M.C.Z.), Erasmus MC, 3000 CA Rotterdam, The Netherlands
3. Netherlands Genomics Initiative-Sponsored Netherlands Consortium for Healthy Ageing (M.C.C.-B., L.O., O.H.F., A.H., F.R., A.G.U., M.C.Z.), 2300 RC Leiden, The Netherlands
4. Department of Respiratory Medicine (G.G.B., L.L.), Ghent University Hospital, B-9000 Ghent, Belgium
5. Departments of Respiratory Medicine (G.G.B.), 3000 CA Rotterdam, The Netherlands
6. Psychiatric Epidemiology (H.T.), Erasmus MC, 3000 CA Rotterdam, The Netherlands