1. Department of Epidemiology; School of Public Health; University of Alabama at Birmingham; Birmingham AL USA
2. Department of Medicine; University of Mississippi Medical Center; Jackson MS USA
3. Department of Population Health Sciences; University of Utah School of Medicine; Salt Lake City UT USA
4. Department of Medicine; Columbia University Medical Center; Columbia University; New York NY USA
5. Vascular Biology and Hypertension Program; Division of Cardiovascular Disease; Department of Medicine; University of Alabama at Birmingham; Birmingham AL USA