天津市卫生行业重点公关课题13KG101;国家高技术研究发展计划863计划2012AA021006;卫生公益性行业研究专项201302009Key Research Project of Tianjin Health Industry13KG101;National High Technology Research and Development Program of China2012AA021006;Public Welfare Fund of National Health and Family Planning Commission of China201302009