Practical Geriatrics
Sequential administration of two fluoroquinolones in the treatment of elderly patients with acute exacerbation of severe chronic obstructive pulmonary disease
XU Hong-fei, LIU Yan-chun, WANG Chun-xian
Practical Geriatrics . 2021, (3): 270 -273 .  DOI: 10.3969/j.issn.1003-9198.2021.03.015