PMC:7143804 / 5778-5865
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T51","span":{"begin":0,"end":87},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Therefore, they are not useful for portable equipment or operation at remote locations."}