国家自然科学基金资助项目81570471;天津市卫生行业重点攻关项目14KG129;天津市儿童医院院级课题Y2020002;National Science Foundation Project81570471;Key Problem-tackling Project of Tianjin Municipal Healthcare Sector Bureau's Special Grant14KG129;Hospital-level project of Tianjin Children's HospitalY2020002