PMC:7224658 / 338-444
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T1","span":{"begin":45,"end":48},"obj":"http://purl.obolibrary.org/obo/CLO_0051582"}],"text":"en decreasing since March, while the traffic has been increasing.\n• The fact that traffic is increasing i"}