1. Rheumatology Unit, Bnai Zion Medical Center, Faculty of Medicine, Technion , Haifa, Israel
2. Department of Hematology and Bone Marrow Transplantation, Rambam Medical Center , Haifa, Israel
3. Institute of Rheumatology, Rabin Medical Center , Petah Tikva, Israel
4. Rheumatology Unit, Baruch Padeh Medical Center , Poriya, Israel
5. Azrieli Faculty of Medicine, Bar-Ilan University , Safed, Israel
6. Rheumatology Unit, Galilee Medical Center , Nahariya, Israel
7. Pulmonary Unit, Bnai Zion Medical Center, Faculty of Medicine, Technion , Haifa, Israel