PMC:7510993 / 5651-5784
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T26","span":{"begin":41,"end":48},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"}],"text":" (WHO) (https://ourworldindata.org/covid-testing) to assess the influence of sampling effort on the number of confirmed cases of COVI"}