1. Department of Internal Medicine, Hurley Medical Center, Michigan State University, College of Human Medicine, Flint, MI, USA
2. Hematology/oncology attending, Hurley Medical Center, Michigan State University, College of Human Medicine, Flint, MI, USA
3. School of Medicine, University of Khartoum, Khartoum, Sudan
4. Department of Research, Hurley Medical Center, Flint, MI, USA