PubMed:32240123 / 128-141
Annnotations
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok18","span":{"begin":0,"end":6},"obj":"NNP"},{"id":"tok19","span":{"begin":7,"end":13},"obj":"NNPS"},{"id":"lookup2","span":{"begin":0,"end":13},"obj":"location"}],"text":"United States"}