1. Department of Global and Public Health; Weill Cornell Medicine - Qatar; Doha Qatar
2. Division of Epidemiology and Biostatistics; European Institute of Oncology; Milan Italy
3. Department of Public Health; Ministry of Public Health; Doha Qatar
4. Department of Dentistry; Hamad Medical Corporation; Doha Qatar
5. Primary Health Care Cooperation; Doha Qatar
6. Department of Surgery; New York Medical College; Valhalla NY USA