1. Tel Aviv University The Institute of Pulmonary Medicine, Sourasky Medical Center and Sackler Faculty of Medicine, , Tel Aviv , Israel
2. Barzilai Medical Center Division of Pulmonary Medicine, , Ashkelon , Israel
3. Ben-Gurion University of the Negev Faculty of Health Sciences, , Beer-Sheva , Israel
4. Ministry of Health Medical Office of Southern District, , Ashkelon , Israel