PubMed:32171193 / 360-363
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T56","span":{"begin":0,"end":3},"obj":"WP"}],"text":"who"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok64","span":{"begin":0,"end":3},"obj":"WP"}],"text":"who"}