PubMed:32118389 / 2698-2703
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T544","span":{"begin":0,"end":5},"obj":"NNS"}],"text":"types"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok598","span":{"begin":0,"end":5},"obj":"NNS"}],"text":"types"}