1. Department of Epidemiology, Rollins School of Public Health and Laney Graduate School, Emory University, Atlanta, Georgia, USA
2. Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
3. School of Community Health Sciences, University of Nevada, Reno, Nevada, USA
4. Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
5. Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, Georgia, USA
6. Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia, USA