PMC:7441777 / 2039-2079
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T24","span":{"begin":2,"end":14},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" Introduction\nAn outbreak of Coronaviru"}