PubMed:32134681 / 300-309
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T50","span":{"begin":0,"end":9},"obj":"NNS"}],"text":"MATERIALS"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok56","span":{"begin":0,"end":9},"obj":"NNP"}],"text":"MATERIALS"}