PMC:7080117 / 2943-3037
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T20","span":{"begin":61,"end":62},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"s. On December 30, 2019, WHO announced the event constituted a Public Health Emergency of Inte"}