1. Department of Geriatric Medicine; Diakonessenhuis Utrecht; Utrecht The Netherlands
2. Department of Pulmonology; Diakonessenhuis Utrecht; Utrecht The Netherlands
3. Department of Internal Medicine; Haga Hospital; The Hague The Netherlands
4. Department of Internal Medicine; Diakonessenhuis Utrecht; Utrecht The Netherlands
5. Department of Pulmonology; UMC Utrecht; Utrecht The Netherlands