1. Division of Endocrinology, Metabolism, and Lipids; Department of Medicine, Emory University School of Medicine; Atlanta GA USA
2. Department of Epidemiology; James T. Laney School of Graduate Studies; Emory University; Atlanta GA USA
3. Division of Pulmonary, Allergy, and Critical Care; Department of Medicine, Emory University School of Medicine; Atlanta GA USA
4. Department of Biostatistics and Bioinformatics; Rollins School of Public Health; Emory University; Atlanta GA USA
5. Atlanta Veterans Affairs Medical Center; Decatur GA USA