1. Faculty of Medicine; American University of Beirut; Beirut Lebanon
2. Family Medicine; American University of Beirut; Beirut Lebanon
3. Department of Internal Medicine; American University of Beirut Medical Center; Beirut Lebanon
4. Biostatistics-Scientific Direction; IRCCS Regina Elena National Cancer Institute; Rome Italy
5. Biostatistics-Scientific Direction; Regina Elena National Cancer Institute; Rome Italy
6. Division of Medical Oncology 2 - Scientific Direction; IRCCS Regina Elena National Cancer Institute; Rome Italy
7. Buffalo Medical Group; Buffalo New York USA
8. Departments of Health Research Methods, Evidence, and Impact and of Medicine; McMaster University; Hamilton Canada