1. Rabin Medical Center; Department of Medicine E, Beilinson Campus; Petah-Tiqva Israel
2. Rabin Medical Center; Infectious Diseases Unit and Department of Medicine E; Beilinson Campus Petah-Tikva Israel 49100
3. Ghent University; Department of General Practice and Primary Health Care; Ghent Belgium 9000
4. University of Bergen; Division of General Practice, Department of Public Health and Primary Health Care; P.O. Box 7804 Bergen Norway N-5020
5. Beilinson Campus, Rabin Medical Center; Department of Medicine E; 39 Jabotinsky Street Petah-Tiqva Israel 49100