1. Renal-Electrolyte and Hypertension Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
2. Department of Biostatistics, Epidemiology and Bioinformatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
3. Division of Pulmonary Medicine, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
4. Division of Digestive Health and Liver Diseases, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL.
5. Division of Gastroenterology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
6. Division of Infectious Diseases, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
7. Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
8. Gift of Life Donor Program, Philadelphia, PA.
9. Battelle, Washington, DC.
10. Division of Cardiothoracic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.