According to the Report on Tobacco Control in China for 2007,540 million non-smokers are suffering from secondhand smoke,including 180 million children aged below 15.
被动吸烟的受害人群也不容忽视,2007年《中国烟草控制报告》指出,中国有5.4亿非吸烟者(其中包括1.8亿名15岁以下的儿童)正在遭受二手烟所带来的危害,而且这种现象在娱乐场所更为严重。
参考来源 - 不同特征人群吸烟相关行为及影响因素的流行病学研究·2,447,543篇论文数据，部分数据来源于NoteExpress
N-UNCOUNT Secondhand smoke is tobacco smoke that people breathe in because other people around them are smoking. 二手烟 [美国英语]
...the first definitive evidence that secondhand smoke causes lung cancer.
...二手烟导致肺癌的第一条确凿的证据。
C.D.C. official Janet Collins says breathing secondhand smoke has immediate harmful effects on a person's heart-and-lung system.
VOA: special.2009.01.07
Each year in the United States, secondhand smoke kills an estimated 46,000 nonsmokers from heart attacks.
VOA: special.2009.01.07
Adults may think they are protecting children from secondhand smoke when they smoke outside their home or only when the children are not there.
VOA: special.2009.01.07
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