1 Pulmonary Institute and CF Center, Carmel Medical Center, Haifa, Israel; B. Rappaport Faculty of Medicine, The Technion-Israel Institute of Technology, Haifa, Israel. Electronic address: michalsh@technion.ac.il.
2 Respiratory Department, Hospital Clinic, University of Barcelona, Barcelona, Spain.
3 Department of Community Medicine and Epidemiology, Carmel Medical Center, Haifa, Israel.
4 Department of Internal Medicine, Herlev and Gentofte Hospital, Copenhagen University Hospital, Copenhagen, Denmark.
5 Division of Molecular and Clinical Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, England.
6 Department of Internal Medicine, Herlev and Gentofte Hospital, Copenhagen University Hospital, Copenhagen, Denmark; Department of Medicine, Respiratory Unit, SUH-Roskilde, Copenhagen, Denmark.
7 Department of Community Medicine and Epidemiology, Carmel Medical Center, Haifa, Israel; B. Rappaport Faculty of Medicine, The Technion-Israel Institute of Technology, Haifa, Israel.