1. Division of General Internal Medicine, Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA.
2. Durham Veterans Affairs Center of Innovation to Accelerate Discovery and Practice Transformation, Durham, North Carolina, USA.
3. Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, North Carolina, USA.
4. Division of Endocrinology, Department of Medicine, Duke University School of Medicine, Durham, North Carolina; USA.
5. Central Virginia VA Health Care System, Department of Veterans Affairs, Richmond, Virginia, USA.
6. Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina, USA.