西南医科大学附属医院项目16009;四川省卫计委科研项目17PJ079;西南医科大学-泸州市联合项目2017LZXNYD-J33Research Fund from the Affiliated Hospital of Southwestern Medical University16009;Research Program of Sichuan Provincial Committee for Public Health and Family Planning17PJ079;Southwestern Medical University-Luzhou City Joint Research Program2017LZXNYD-J33