1. Faculty of Pharmacy Clinical Department Alexandria University, Alexandria, Egypt;
2. Faculty of Medicine Suez Canal University, Ismailia, Egypt;
3. Faculty of Medicine, Ain Shams University, Cairo, Egypt;
4. Faculty of Medicine, Menoufia University, Menoufia, Egypt;
5. Faculty of Medicine, Kafrelsheikh University, Kafr El-Sheikh, Egypt;
6. Faculty of Medicine, University of Oran 1 Ahmed Ben Bella, Oran, Algeria;
7. Faculty of Medicine, Al-Azhar University, Damietta, Egypt; and
8. Clinical Research Management Program, Arizona State University, Tempe, Arizona