1. University of Cincinnati and Cincinnati Children's Hospital Medical Center; Cincinnati Ohio
2. Institute of Translational Medicine and Alder Hey Children's NHS Foundation Trust; Liverpool UK
3. Ohio State University, Nationwide Children's Hospital, and Wexner Medical Center; Columbus Ohio
4. University of Campinas; Campinas Brazil
5. Children's Institute, Hospital das Clinicas HCFMUSP; Universidade de São Paulo; São Paulo Brazil
6. Children's Hospital at Montefiore; Albert Einstein College of Medicine; Bronx New York
7. Baylor College of Medicine and Texas Children's Hospital Houston; Texas
8. University of Toronto and Hospital for Sick Children; Toronto Ontario Canada
9. Clinica Pediatrica e Reumatologia; Istituto Giannina Gaslini, and Università degli Studi di Genova; Genoa Italy
10. Jaslok Hospital; Mumbai India
11. University Children's Hospital; University Medical Centre; Ljubljana Slovenia
12. Northwestern University Feinberg School of Medicine and Ann and Robert Lurie Children's Hospital of Chicago; Chicago Illinois
13. University of Cincinnati; Cincinnati Ohio