Survey on passive smoking among adult residents in Beijing, 2013-2015
LIU Jing-fang, ZHAO Qian-nan, WANG Chun-xiu, HOU Cheng-bei, LI Hui-hui, FANG Xiang-hua
South China Journal of Preventive Medicine . 2020, (5): 468 -472 .  DOI: 10.12183/j.scjpm.2020.0468

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