1. Department of Epidemiology and Biostatistics School of Public Health Tianjin Medical University Tianjin China
2. Tianjin Key Laboratory of Environment, Nutrition and Public Health Tianjin China
3. Center for International Collaborative Research on Environment Nutrition and Public Health Tianjin China
4. Aging Research Center, Department of Neurobiology, Care Sciences and Society Karolinska Institutet Stockholm Sweden
5. Rush Alzheimer's Disease Center Rush University Medical Center Chicago Illinois USA