%0 Journal Article %A Peng Jia %A Shujuan Yang %T Early warning of epidemics: towards a national intelligent syndromic surveillance system (NISSS) in China %D 2020 %R 10.1136/bmjgh-2020-002925 %J BMJ Global Health %P e002925 %V 5 %N 10 %U https://gh.bmj.com/content/bmjgh/5/10/e002925.full.pdf