PubMed:32134681 / 1622-1623
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T288","span":{"begin":0,"end":1},"obj":"SYM"}],"text":"="}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok340","span":{"begin":0,"end":1},"obj":"SYM"}],"text":"="}