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Association of cigarette production and tobacco retailer density on secondhand smoke exposure in urban China
- Correspondence to Dr Tingzhong Yang, Women's Hospital/Center for Tobacco Control Research, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Tingzhongyang{at}zju.edu.cn
Citation
Association of cigarette production and tobacco retailer density on secondhand smoke exposure in urban China
Publication history
- Received March 16, 2021
- Accepted May 18, 2021
- First published July 6, 2021.
Online issue publication
November 30, 2022
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© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY. Published by BMJ. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed in accordance with the Creative Commons Attribution 4.0 Unported (CC BY 4.0) license, which permits others to copy, redistribute, remix, transform and build upon this work for any purpose, provided the original work is properly cited, a link to the licence is given, and indication of whether changes were made. See: https://creativecommons.org/licenses/by/4.0/.