Study on the correlation between different subtypes of emphysema and pulmonary function in chronic obstructive pulmonary disease#br#
HE Li1, LIU Zhai1*, JIA Lizhuo2, MU Jiankui1, LI Zhu3, REN Qingyun1
Journal of Hebei Medical University . 2018, (12): 1419 -1423 .  DOI: 10.3969/j.issn.10073205.2018.12.014