PMC:7143707 / 14403-14494
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T142","span":{"begin":0,"end":2},"obj":"http://purl.obolibrary.org/obo/CLO_0050510"}],"text":"18 https://www.cdc.gov/niosh/npptl/topics/respirators/disp_part/respsource3healthcare.html"}
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T122","span":{"begin":0,"end":91},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"18 https://www.cdc.gov/niosh/npptl/topics/respirators/disp_part/respsource3healthcare.html"}