1. MedStar Clinical Research Center, MedStar Health Research Institute, Washington, District of Columbia
2. Section of Endocrinology, MedStar Washington Hospital Center, Washington, District of Columbia
3. Nuclear Medicine Research, MedStar Washington Hospital Center, Washington, District of Columbia
4. Division of Endocrinology, Department of Medicine, Georgetown University, Washington, District of Columbia
5. Resident Internal Medicine - MedStar Washington Hospital Center, Washington, District of Columbia
6. Department of Biostatistics and Biomedical Informatics, MedStar Health Research Institute, Washington, District of Columbia
7. Department of Neurosurgery, MedStar Washington Hospital Center, Washington, District of Columbia