The relation ship between lung microbiome and COPD：a review of recent studies 

HE Guiqiang, LANG Yanzhu, ZHAO Shunshun, WANG Xiaojing, OUYANG Yao
The Journal of Practical Medicine . 2023, (4): 514 -518 .  DOI: 10.3969/j.issn.1006⁃5725.2023.04.023