1. Department of Epidemiology and BiostatisticsSchool of Public HealthTianjin Medical University Tianjin China
2. Tianjin Key Laboratory of EnvironmentNutrition and Public Health Tianjin China
3. Tianjin Center for International Collaborative Research in EnvironmentNutrition and Public Health Tianjin China
4. Aging Research CenterDeptartment of NeurobiologyCare Sciences and SocietyKarolinska Institutet Stockholm Sweden
5. Rush Alzheimer's Disease CenterRush University Medical Center Chicago Illinois