1. Division of Endocrinology and Metabolism, UT Southwestern Medical Center , Dallas, Texas 75390 , USA
2. Division of Surgical Oncology, UT Southwestern Medical Center , Dallas, Texas 75390 , USA
3. Department of Anesthesiology and Pain Management, UT Southwestern Medical Center , Dallas, Texas 75390 , USA
4. Division of Gastroenterology and Hepatology, University of Pennsylvania , Philadelphia, Pennsylvania 19104 , USA
5. Department of Pathology, UT Southwestern Medical Center , Dallas, Texas 75390 , USA
6. Division Division of Metabolism, Endocrinology and Diabetes, University of Michigan , Ann Arbor, Michigan 48109 , USA
7. Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center , Houston, Texas , USA
8. Division of Hematology and Oncology, UT Southwestern Medical Center , Dallas, Texas 75390 , USA