Department of Chronic Diseases Epidemiology, Yale School of Public Health, New Haven, Connecticut (Drs Fouad and Shebl); and Community Medicine Department, Faculty of Medicine, Suez Canal University, Ismailia, Egypt (Drs Fouad, Waheed, Gamal, Amer, Abdellah).
Address correspondence to: Ahmed Mahmoud Fouad, MD, MSc, Department of Chronic Diseases Epidemiology, Yale School of Public Health, Yale University, 47 College Street, Suite 108, New Haven, CT 06520 ([email protected]).
This study was supported by Suez Canal University, Egypt, and The Cultural Affairs and Mission Sector of The Egyptian Ministry of Higher Education. Ahmed Fouad is employed by Suez Canal University, and he currently has Fellowship at the Yale School of Public Health funded by The Cultural Affairs and Mission Sector of The Egyptian Ministry of Higher Education. He has no financial relationship with a commercial entity having an interest in the subject matter of the manuscript.
Authors Fouad, Waheed, Gamal, Amer, Abdellah, and Shebl have no relationships/conditions/circumstances that present a potential conflict of interest.
The IRB of Faculty of Medicine, Suez Canal University, has approved the protocol of this study in conformity with ethical and humane principles of research.
