A Comparative Analysis of Smoke-Free Regulations in 23 Chinese Cities, 2015–2022. - Chen, Yu; Zhao, Xinjie; Chen, Zhifeng; Zhang, Xinyi; Li, Jinghan; Lan, Jiayi; Liu, Shiyu; Yu, Xinyao; Chan, Kin-Sun; Zeng, Qian (Tobacco Induced Diseases, 2026)