PMC:7047374 / 29594-29672
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T216","span":{"begin":0,"end":19},"obj":"Sentence"},{"id":"T217","span":{"begin":20,"end":78},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Competing interests\nThe authors declare that they have no competing interests."}