国家自然科学基金81473060,81273157,30872166;国家卫生和计划生育委员会公益性行业科研专项201402010;山西省优势和特色重点学科建设项目;National Natural Science Foundation of China81473060,81273157,30872166;Nonprofit Scientific Research Industry Special Fund of National Health and Family Planning Commission of China201402010;Key Discipline Construction Project with Superiority and Characteristics in Shanxi Province