(原始内容存档于2012-09-03). Secondhand smoke exposure causes disease and premature death in children and adults who do not smoke (页面存档备份,存于互联网档案馆) World Health
Involuntary Exposure to Tobacco Smoke: A Report of the Surgeon General. 美国卫生和服务部. 2006-06-27. (原始内容存档于2006-07-03). Secondhand smoke exposure causes disease and