PubMed:32214286 / 457-470
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok77","span":{"begin":0,"end":6},"obj":"NNP"},{"id":"tok78","span":{"begin":7,"end":13},"obj":"NNPS"},{"id":"lookup9","span":{"begin":0,"end":13},"obj":"location"}],"text":"United States"}