Evaluation of the trends in the incidence of infectious diseases using the syndromic surveillance system, early warning and response unit, Mongolia, from 2009 to 2017: a retrospective descriptive multi-year analytical study

利用蒙古国综合征监测系统、早期预警和应对部门对2009年至2017年传染病发病率趋势进行评估：一项回顾性描述性多年分析研究