1. Department of Medicine, Division of Endocrinology, Diabetes, & Metabolism, Duke University , Durham, NC 27710 , USA
2. Department of Medicine, Duke University Medical Center , Durham, NC 27710 , USA
3. Durham Veterans Affairs Center of Innovation to Accelerate Discovery and Practice Transformation, Durham Veterans Affairs Health Care System , Durham, NC 27705 , USA
4. Duke University School of Nursing , Durham, NC 27710 , USA
5. Department of Biostatistics and Bioinformatics, Duke University , Durham, NC 27710 , USA