PubMed:32214079 / 894-907
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok189","span":{"begin":0,"end":6},"obj":"NNP"},{"id":"tok190","span":{"begin":7,"end":13},"obj":"NNPS"},{"id":"lookup31","span":{"begin":0,"end":13},"obj":"location"}],"text":"United States"}