PubMed:32060789 / 967-975
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T158","span":{"begin":0,"end":8},"obj":"NNS"}],"text":"vaccines"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok175","span":{"begin":0,"end":8},"obj":"NNS"}],"text":"vaccines"}