PMC:7436876 / 768-842
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T9","span":{"begin":0,"end":74},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The causes can be divided into respiratory and non‐respiratory (Fig. 1 )."}