四川省卫生和计划生育委员会科研课题16PJ549;西南医科大学校级资金资助计划2014ZD-012;西南医科大学附属医院科研课题15049Sichuan Provinical Health and Family Planning Commission Research Projects16PJ549;Sonthwest Medical University Financial Supporting Plans2014ZD-012;Affiliated Hospital of Southwest Medical University Research Projects15049