1 Children's National Health System, Washington DC, United States; Center for Cancer and Blood Disorders, Departments of Laboratory Medicine and Hematology, Children's National Medical Center, 111 Michigan Ave, NW, Washington DC, 20010, United States; Department of Pediatrics, George Washington University, School of Medicine and Health Sciences, Washington DC, United States; Department of Pathology, George Washington University, School of Medicine and Health Sciences, Washington DC, United States. Electronic address: ewong@childrensnational.org.
2 Children's National Health System, Washington DC, United States; Center for Cancer and Blood Disorders, Departments of Laboratory Medicine and Hematology, Children's National Medical Center, 111 Michigan Ave, NW, Washington DC, 20010, United States; Department of Pediatrics, George Washington University, School of Medicine and Health Sciences, Washington DC, United States.
3 Division of Transfusion Medicine, Laboratory Medicine Department, University of Washington, Seattle, WA, United States.