PMC:7026896 / 13891-14083 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T73","span":{"begin":11,"end":12},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T74","span":{"begin":51,"end":52},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T75","span":{"begin":162,"end":163},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":" nature of a PHEIC declaration (either an event is a PHEIC or it isn't – there are no intermediate options) and the specificity of the three defined criteria for a PHEIC have caused difficulty"}