1. Department of Endocrinology and Nutrition, Hospital Divino Espírito Santo, Ponta Delgada, Azores, Portugal.
2. Department of Medicine, The University of Chicago, Chicago, Illinois.
3. Department of Molecular Medicine Metabolism and Nutrition, The University of Chicago, Chicago, Illinois.
4. Department of Pediatrics, Committees on, The University of Chicago, Chicago, Illinois.
5. Department of Genetics, The University of Chicago, Chicago, Illinois.