1. College of Medicine Alfaisal University Riyadh Saudi Arabia
2. Department of Medicine Houston Methodist Hospital Houston TX USA
3. Department of Laboratory Medicine & Pathology Mayo Clinic Rochester MN USA
4. Department of Pathology and Laboratory Medicine King Faisal Specialist Hospital and Research Center Riyadh Saudi Arabia
5. Oncology Center King Faisal Specialist Hospital and Research Center Riyadh Saudi Arabia
6. Division of Hematology, Department of Medicine Mayo Clinic Rochester MN USA