1. Department of Public Health and Community Medicine, Faculty of Medicine, Zagazig University, Zagazig, Egypt
2. Royal Colleague of General Practitioners [INT], London, UK
3. Department of Mental Health Primary Care, Nova University, Lisbon, Portugal
4. Qena Faculty of Medicine, South Valley University, Qena, Egypt
5. Faculty of Medicine, Aleppo University, Aleppo, Syria
6. Public Health Departments, King Salman Bin Abdulaziz Medical City, El Madinah, Saudi Arabia
7. Department of Public Health, Edea Health District, Edea, Cameroon
8. Association pour le développement de l'épidémiologie de terrain, Château de Vaccassy, Saint-Maurice Cedex, France