PubMed:32074786 / 267-274
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T42","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"efforts"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok45","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"efforts"}