PMC:7795804 / 19467-19675 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7795804","sourcedb":"PMC","sourceid":"7795804","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7795804","text":"rencing challenging. Moreover, the survey sampling was based on an online invitation, which does not allow for generalization because the population that does not use the Internet was not explored.\nIndeed, a ","tracks":[{"project":"LitCovid-sentences","denotations":[{"id":"T115","span":{"begin":21,"end":197},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"attributes":[{"subj":"T115","pred":"source","obj":"LitCovid-sentences"}]}],"config":{"attribute types":[{"pred":"source","value type":"selection","values":[{"id":"LitCovid-sentences","color":"#93eca7","default":true}]}]}}