1. School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA
2. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
3. Department of Biomedical Informatics, Emory University, Atlanta, GA, USA
4. Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
5. College of Pharmacy, Mercer University, Macon, GA, USA
6. Seattle Epidemiologic Research and Information Center, University of Washington, Seattle, WA, USA
7. Department of Psychiatry and Behavioral Sciences and the Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA, USA
8. Department of Epidemiology, University of Washington, Seattle, WA, USA