PubMed:31994742 / 603-611
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T108","span":{"begin":0,"end":8},"obj":"NN"}],"text":"mainland"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok123","span":{"begin":0,"end":8},"obj":"NN"}],"text":"mainland"}