PMC:7212965 / 47169-47454 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T316","span":{"begin":0,"end":285},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Based on our study selection process, we may have missed studies, including smaller case series that reported on this information, and studies that were published after our inclusion period, in light of the exponential number of studies in press, under review, and on preprint servers."}