An analysis of clinical characteristics and risk factors for mortality in elderly patients with hospital⁃acquired pneumonia
WU Wenbin, YANG Hailing, ZHU Jiaxin, ZHENG Wenzheng, FENG Dingyun, ZHANG Tiantuo
The Journal of Practical Medicine . 2020, (24): 3425 -3429 .  DOI: 10.3969/j.issn.1006⁃5725.2020.24.024