Richness of sputum microbiome in acute exacerbations of eosinophilic chronic obstructive pulmonary disease oleh Yu-Jing Qi, Xue-Jiao Sun, Zhe Wang, Yan-Fei Bin, Ying-Hua Li, Xiao-Ning Zhong, Jing Bai, Jing-Min Deng, Zhi-Yi He, Pei-Fang Wei