1. Department of Pathology and Immunology Washington University School of Medicine St. Louis Missouri USA
2. Department of Pathology and Laboratory Medicine, Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania USA
3. Department of Pathology and Laboratory Medicine University of North Carolina Chapel Hill North Carolina USA
4. Department of Pediatric Hematology/Oncology/Neuro‐oncology/Stem Cell Transplant, Ann & Robert H. Lurie Children's Hospital of Chicago Northwestern University Feinberg School of Medicine Chicago Illinois USA
5. Department of Pathology and Laboratory Medicine Phoenix Children's Hospital Phoenix Arizona USA
6. Department of Laboratory Medicine and Pathology Mayo Clinic Rochester Minnesota USA
7. Laboratory Medicine and Pathology and Center for Regenerative Medicine Mayo Clinic Jacksonville Florida USA
8. Department of Pathology, Molecular and Cell‐Based Medicine Icahn School of Medicine New York New York USA
9. Department of Bone Marrow Transplant and Cellular Immunotherapy H. Lee Moffitt Cancer Center Tampa Florida USA