PMC:7530350 / 1938-2552 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T22","span":{"begin":0,"end":59},"obj":"Sentence"},{"id":"T23","span":{"begin":60,"end":100},"obj":"Sentence"},{"id":"T24","span":{"begin":101,"end":152},"obj":"Sentence"},{"id":"T25","span":{"begin":153,"end":235},"obj":"Sentence"},{"id":"T26","span":{"begin":236,"end":287},"obj":"Sentence"},{"id":"T27","span":{"begin":288,"end":481},"obj":"Sentence"},{"id":"T28","span":{"begin":482,"end":512},"obj":"Sentence"},{"id":"T29","span":{"begin":513,"end":581},"obj":"Sentence"},{"id":"T30","span":{"begin":582,"end":614},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Ethics approval and consent to participate: not applicable. Consent for publication: not applicable. Availability of data and materials: not applicable. Conflicts of interests: the authors declare that they have no competing interests. Funding: there is no funding for the present study. Authors’ contributions: H.M. conceptualized the study, conducted database search, search results screening, detailed review, data extraction, quality assessment, and prepared the initial draft. A.S. prepared the final draft. N.R. supervised the project and critically appraised the manuscript. Acknowledgments: not applicable."}