PMC:7281378 / 9532-9775 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T65","span":{"begin":55,"end":199},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"also screened to assess their relevance for inclusion. The relevant articles were downloaded and stored on the computer drive for further screening and refinement according to PRISMA guidelines [50]. The references of downloaded publications w"}