1. King Salman Specialist Hospital, Hail, Saudi Arabia
2. Security Force Hospital, Makkah, Saudi Arabia
3. King Fahad Central Hospital, Jazan City, Saudi Arabia
4. Department of Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
5. Department of Community Medicine, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
6. Department of Pathology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
7. Department of Pathology, Faculty of Medicine, Tanta University, Tanta, Egypt