Effect of periodontal therapy on COPD outcomes: a systematic review.
Ioulianos ApessosAthanasios VoulgarisMichalis AgrafiotisDimitrios AndreadisPaschalis SteiropoulosPublished in: BMC pulmonary medicine (2021)
PROSPERO 2020 (CRD42020158481). https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42020158481.