Funding for this research was provided by:
American College of Rheumatology Research and Education Foundation (R Bridge Award)
Received: 20 November 2019
Accepted: 16 March 2020
First Online: 24 March 2020
Ethics approval and consent to participate
: The protocol for this study was reviewed and approved by the Children’s Hospital of Philadelphia’s Committee for the Protection of Human Subjects (IRB 18-014988). A waiver of consent/parental permission, a waiver of assent, and a waiver of HIPAA authorization were granted for this retrospective study.
: Not applicable.
: PW has served as a consultant for Lilly and Novartis. WM has received consulting fees and/or honoraria from the AbbVie, Boehringer, Celgene, Galapagos, Janssen, Lilly, Novartis, Pfizer, and UCB. JJ is supported by the Alberta Health Services Chair in Diagnostic Imaging.