Prevalence, diagnosis, and treatment of chronic obstructive pulmonary disease in a hospitalized lung cancer population: a single center study - Qu, Haiyan; Zhu, Mengjing; Shan, Chuxiao; Ji, Xuan; Ji, Guijuan; Zhang, Wenhui; Zhang, Hao; Chen, Bi (Journal of Thoracic Disease, 2023)