1. Department of General Surgery, Al Zahraa Hospital University Medical Center, Lebanese University, Beirut, Lebanon
2. Faculty of Medicine, Lebanese University, Beirut, Lebanon
3. Department of Oncology, Al Zahraa Hospital University Medical Center, Lebanese University, Beirut, Lebanon
4. Department of Internal Medicine, Roger William Medical Center, Providence, USA, RI
5. Department of Dermatology, Saint Georges Hospital University Medical Center (UMC), Beirut, Lebanon