北京市科学技术委员会-国家国际科技合作与交流专项(2012DFA31110)%国家卫生和计划生育委员会公益性行业科研专项项目(201402009)%首都卫生发展科研专项资助项目(首发2011-2006-05)International Science & Technology Cooperation Program of China(2012DFA31110)%The research special fund for public welfare industry of health(201402009)%The capital health research and development of special(2011-2006-05)