PMC:7047000 / 1925-1993
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T16","span":{"begin":0,"end":68},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Structured letter therapy should have the following characteristics:"}