From the 11th Report on Carcinogens of the U.S. National Institutes of Health* Secondhand Smoke Fact Sheet from the U.S. Centers for Disease Control and Prevention* Tobacco Smoke in the Workplace from the U.S. Centers for Disease Control and Prevention* Health Effects of Exposure to Environmental Tobacco Smoke, from the California Environmental Protection Agency* Environmental Tobacco Smoke Exposure in Children Aged 3-19 Years with and Without Asthma in the United States, 1999-2010 National Center for Health Statistics;Tobacco industry* : Report of the Committee of Experts on Tobacco Industry Documents from the World Health Organization* The Legacy Tobacco Documents Library and British American Tobacco Documents Archive from the University of California, San Francisco* Philip Morris USA Document Archive, made public as a result of the Tobacco Master Settlement Agreement;Other links* Guidelines Protection from Exposure to Secondhand Smoke, by WHO Framework Convention on Tobacco Control* WHO Policy recommendations on protection from exposure to second-hand tobacco smoke* Rodent smoke screen: Rat model shows tobacco smoke exposure induces brain changes indicative of nicotine dependence, in Science Daily* "How Secondhand Cigarette Smoke Changes Your Genes"