1. College of Medicine, University of Nebraska Medical Center, Omaha, USA.
2. Jane Anne Nohl Division of Hematology and Center for the Study of Blood Diseases, University of Southern California (USC)/Norris Cancer Center, USC University Hospital, Los Angeles, USA.
3. Department of Pathology, Veterans Affairs West Los Angeles Medical Center, Los Angeles, USA.
4. Consultant Adult Hematology/BMT, Princess Noorah Oncology Center, Jeddah, Kingdom of Saudi Arabia.
5. Division of General Internal Medicine, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, USA.