1. Department of Internal Medicine, Division of Hospital Medicine, University of Michigan, Ann Arbor, USA
2. Hospital Medicine, Baptist Medical Center South, Montgomery, USA
3. Faculty of Medicine, Universidad Dr. Jose Matias Delgado, La Libertad, El Salvador
4. Department of Pathology, University of Michigan Medical School, Ann Arbor, USA
5. Department of Internal Medicine, Division of Hematology and Oncology, University of Michigan, Ann Arbor, USA