PubMed:32022276 / 933-938
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T141","span":{"begin":0,"end":5},"obj":"NNS"}],"text":"bonds"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok153","span":{"begin":0,"end":5},"obj":"NNS"}],"text":"bonds"}