Detection of <em>Porphyromonas gingivalis</em> rag genotypes in patients of chronic periodontitis with chronic obstructive pulmonary disease

YU Miao, LI Ti, LIU Ting, HE Long-fei, TIAN Tian-tian, CHEN Jing

Shanghai Journal of Stomatology . 2022, (1): 100 -103 . DOI: 10.19439/j.sjos.2022.01.021