1. Division of Endocrinology; Department of Internal Medicine; University of Texas Medical Branch; Galveston Texas USA
2. Mitchell Center for Neurodegenerative Diseases; Department of Neurology; University of Texas Medical Branch; Galveston Texas USA
3. Division of Endocrinology; Department of Internal Medicine; UT Southwestern; Dallas Texas USA
4. Department of Pharmacology & Toxicology; University of Texas Medical Branch; Galveston Texas USA