PMC:7100515 / 48123-48186
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T361","span":{"begin":0,"end":19},"obj":"Sentence"},{"id":"T362","span":{"begin":20,"end":63},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Competing interests\nThe authors declare no competing interests."}