1. Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
2. Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
3. Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama, USA
4. Department of Laboratory Medicine and Pathology, Seattle Children’s Hospital, Seattle, Washington, USA
5. Children’s Mercy Hospital, Kansas City, Missouri, USA
6. Memorial Sloan Kettering Cancer Center, Weill Medical College of Cornell University, New York, New York, USA
7. Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois, USA
8. Department of Pathology and Laboratory Medicine, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
9. Department of Pathology, Hackensack University Medical Center, Hackensack, New Jersey, USA
10. Departments of Pediatrics, University of Texas Health Science Center, San Antonio, Texas, USA
11. Departments of Pathology, University of Texas Health Science Center, San Antonio, Texas, USA