1. Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana
2. Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana2Department of Epidemiology, School of Public Health, Medical College of Soochow University, Suzhou, China
3. Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana3Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana