1. *Penn Institute for Immunology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA;
2. †Division of Rheumatology, The Children’s Hospital of Philadelphia, Philadelphia, PA;
3. ‡Department of Pathology and Laboratory Medicine, The Children’s Hospital of Philadelphia, Philadelphia, PA;
4. §Division of Neonatology, The Children’s Hospital of Philadelphia, Philadelphia, PA;
5. ¶Division of Gastroenterology, Hepatology, and Nutrition, The Children’s Hospital of Philadelphia, Philadelphia, PA;
6. ‖Department of Biomedical and Health Bioinformatics, The Children’s Hospital of Philadelphia, Philadelphia, PA;
7. #Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington, DC; and
8. **Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA