PMC:7170415 / 1192-1302
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T14","span":{"begin":40,"end":44},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"}],"text":"ountries have encountered challenges in test delivery and specimen collection that have inhibited rapid increa"}