1. School of Public Health, Tianjin Medical University, Tianjin 300070, China
2. Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurosurgical Institute, Tianjin Huanhu Hospital, Tianjin 300070, China
3. Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin 300070, China