PubMed:32083638 / 380-389
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T53","span":{"begin":0,"end":9},"obj":"NN"}],"text":"formation"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok68","span":{"begin":0,"end":9},"obj":"NN"}],"text":"formation"}