1. Department of Medicine; Section of Endocrinology and Metabolism; Wake Forest School of Medicine; Winston-Salem North Carolina USA
2. Division of Public Health Sciences; Wake Forest School of Medicine; Winston-Salem North Carolina USA
3. Department of Medicine; University of Texas at San Antonio Health Sciences Center; San Antonio Texas USA
4. Department of Preventive Medicine and Biometrics; University of Colorado at Denver Health Sciences Center; Denver Colorado USA
5. Department of Radiology; University of Colorado; Anschutz Medical Campus Aurora Colorado USA
6. Department of Medicine; Cedars-Sinai Medical Center; Los Angeles California USA