1. Tanta Research Team, Tanta, El-Gharbia Governorate, Egypt
2. Harvard Medical School, Boston, MA, US
3. Boston University School of Medicine, Boston, MA, US
4. Doheny Eye Institute, University of California, Los Angeles, Los Angeles, CA, US
5. Faculty of Medicine, Tanta University, Tanta, El-Gharbia Governorate, Egypt
6. Faculty of Medicine, Al-Azhar University, Cairo, Egypt
7. Department of Ophthalmology, Hamad Medical Corporations, Doha, Qatar
8. Mayo Clinic, Rochester, MN, US
9. McLaren Health Care, Flint, Michigan, US
10. Michigan State University, East Lansing, Michigan, US
11. All India Institute of Medical Sciences, Gorakhpur, Uttar Pradesh, India
12. Department of Community Medicine and School of Public Health, Postgraduate Institute of Medical Education and Research, Chandigarh, India
13. Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Beirut, Lebanon
14. Master’s Program of Clinical Epidemiology and Biostatistics, Scientific University of the South (Universidad Científica del Sur), Lima, Peru
15. Tribhuvan University Teaching Hospital, Institute of Medicine, Kathmandu, Nepal
16. Department of Microbiology, Dr. D.Y. Patil Medical College, Hospital and Research Centre, Dr. D.Y. Patil Vidyapeeth, Pune, Maharashtra, India
17. Department of Public Health Dentistry, Dr. D.Y. Patil Dental College and Hospital, Dr. D.Y. Patil Vidyapeeth, Pune, Maharashtra, India