1. Department of General Surgery; Al-Adan Hospital, Ministry of Health; Kuwait City Kuwait
2. ENT Department; Zain and Al-Sabah Hospitals, Ministry of Health; Kuwait City Kuwait
3. Chairman of Oral and Maxillofacial Surgery; Al-Amiri Hospital, Ministry of Health; Kuwait City Kuwait
4. Department of Pathology; Al-Sabah Hospital; Kuwait City Kuwait
5. Kuwait Cancer Control Center; Ministry of Health; Kuwait City Kuwait
6. ENT Department; Kuwait Institute of Medical Specialization; Ministry of Health; Kuwait City Kuwait