1. From the Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
2. Correspondence: Peter A. Hall · Senior Consultant, Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, MBC #10, PO Box 3354, Riyadh 11211, Saudi Arabia · phalí@kfshrc.edu.sa