Frequency–risk relationships between second-hand smoke exposure and respiratory symptoms among adolescents: a cross-sectional study in South China

Zhiyao Chen(Heilongjiang University of Chinese Medicine), Xiaohua Ye(Brown Foundation), Shunming Li(Guangdong Pharmaceutical University), Bin Xu(Nanjing University of Chinese Medicine), Guocong Liu(Guangzhou Center for Disease Control and Prevention), Ting Jiang(Central South University), Jianying Chen
BMJ Open
April 1, 2018
Cited by 9


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