PubMed:32052466 / 792-800
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T124","span":{"begin":0,"end":8},"obj":"NNS"}],"text":"vaccines"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok132","span":{"begin":0,"end":8},"obj":"NNS"}],"text":"vaccines"}