1. Department of Gastroenterology, Saint Georges Hospital University Medical Centre, University of Balamand, Beirut, Lebanon
2. Department of Rheumatology, Saint Georges Hospital University Medical Centre, University of Balamand, Beirut, Lebanon
3. Department of Nephrology, Geitawi Lebanese Hospital Medical Center, Lebanese University, Beirut, Lebanon
4. Internal Medicine Department, Al Zahraa Hospital University Medical Center, Lebanese University, Beirut, Lebanon
5. Department of General Surgery, Saint Georges Hospital University Medical Center, University of Balamand, Beirut, Lebanon