Affiliation: | (1) From the Departments of Internal Medicine, University Hospital, Petersgraben 4, CH-4031 Basel, Switzerland;(2) Division of Hospital Epidemiology, University Hospital, CH-1211 Geneva, Switzerland;(3) Department of Pneumology, University Hospital, Petersgraben 4, CH-4031 Basel, Switzerland;(4) Emergency Department, University Hospital, Petersgraben 4, CH-4031 Basel, Switzerland;(5) Department of Cinical Chemistry, University Hospital, Petersgraben 4, CH-4031 Basel, Switzerland |