Prevalence of respiratory diseases in relation to smoking rate in adults living in four Chinese cities: a comparison between 2017-2018 and 1993-1996 - Yan, Meilin; Gong, Jicheng; Liu, Qin; Li, Wenyan; Duan, Xiaoli; Cao, Suzhen; Li, Sai; He, Lingyan; Yin, Zixuan; Weiwei Lin; Zhang, Junfeng Jim (Journal of Thoracic DiseaseJournal of Thoracic Disease, 2020)