1. From the Department of Pathology and Laboratory Medicine, Children's Hospital of Colorado, Aurora (Black, Arnold)
2. the Department of Pathology, Children's Hospital Boston, Boston, Massachusetts (Al-Ibraheemi)
3. the Department of Pathology, Microbiology, and Immunology, Vanderbilt University, Nashville, Tennessee (Coffin)
4. the Department of Pathology and Laboratory Medicine, Oregon Health and Sciences University, Portland (Davis)
5. Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles (Parham)
6. the Department of Laboratory Medicine and Pathology, Seattle Children's Hospital, Seattle, Washington (Rudzinski)
7. the Department of Pathology and Laboratory Medicine, Nationwide Children's Hospital, Columbus, Ohio (Shenoy)
8. the Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (Surrey)
9. the Departments of Pathology (Tan) and Pediatrics (Spunt), Lucille Packard Children's Hospital, Stanford University School of Medicine, Stanford, California