PMC:7386785 / 4036-4220 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T72528","span":{"begin":63,"end":70},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"}],"text":"ts because inclusion in the studies depended on the applicable testing and referral protocols, which included many of the signs and symptoms under study in this review. Five studies on"}