1. Department of Laboratory Medicine and Pathology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.
2. Department of Clinical Pathology, National Cancer Institute, Cairo University, Cairo, Egypt.
3. Department of Hematology and Medical Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.
4. Department of Laboratory Medicine and Pathology, Hamad General Hospital, Doha, Qatar.