Division of Nephrology, Department of Pediatrics, The Children’s Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Pennsylvania, PA, USA

Amy J. Kogon, Natalie Walker & Michelle R. Denburg

Biostatistics and Data Management Core, The Children’s Hospital of Philadelphia, Pennsylvania, PA, USA

Lance S. Ballester

Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine at the University of Pennsylvania and The Children’s Hospital of Philadelphia, Pennsylvania, PA, USA

Jarcy Zee & Michelle R. Denburg

Division of Pediatric Nephrology, Department of Pediatrics, Nemours/Alfred I. duPont Hospital for Children, 1600 Rockland Road, Wilmington, DE, USA

Joshua J. Zaritsky

Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA

Meredith A. Atkinson

Cohen Children’s Medical Center of NY, New Hyde Park, NY, USA

Christine B. Sethna

Departments of Laboratory Medicine and Medicine, Kidney Research Institute, University of Washington, Seattle, DC, USA

Andrew N. Hoofnagle

Department of Pediatrics, Stanford School of Medicine, Palo Alto, CA, USA

Mary B. Leonard