PMC:7003341 / 86565-86598
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T743","span":{"begin":0,"end":33},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"RCTs Randomized controlled trials"}