1. Department of Public Health, Tuberculosis Program, First Health Cluster, Ministry of Health, Riyadh, Saudi Arabia.
2. President and CEO of Sahel Oncology LLC, Orange Coast Medical Center of Hope Inc. 496 Old Newport Blvd. #7 Newport Beach, CA 92612, USA.
3. Biomedical Sciences department, Faculty of Veterinary Medicine, King Faisal University, Saudi Arabia.