1. 1Section on Genetics and Epidemiology, Research Division, Joslin Diabetes Center, Boston, MA
2. 2Department of Medicine, Harvard Medical School, Boston, MA
3. 3Department of Basic Health Sciences, Universidad Rey Juan Carlos, Alcorcón, Spain
4. 4High Performance Research Group in Physiopathology and Pharmacology of the Digestive System (NeuGut), Universidad Rey Juan Carlos, Alcorcón, Spain
5. 5Department of Medicine, University of Padova, Padova, Italy
6. 6Division of Nephrology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI
7. 7Computational Biomedicine, Department of Medicine, Boston University, Boston, MA