1. Pathology and Laboratory Services Department, Johns Hopkins Aramco Healthcare, 1709 Dhahran, Saudi Arabia
2. Pathology and Laboratory Services Department, Johns Hopkins Aramco Healthcare, 10613 Dhahran, Saudi Arabia
3. Department of Anatomy, College of Medicine and Medical Sciences, 26671 Manama, Bahrain
4. Department of Higher Studies, Arabian Gulf University, 26671 Manama, Bahrain