PubMed:32083638 / 262-267
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T36","span":{"begin":0,"end":5},"obj":"NNS"}],"text":"steps"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok48","span":{"begin":0,"end":5},"obj":"NNS"}],"text":"steps"}