References
- Warren C, Sinha D, Lee J, Lea V, Jones N. Tobacco use, exposure to secondhand smoke, and cessation counseling among medical students: Cross-country data from the Global Health Professions Student Survey (GHPSS), 2005–2008. BMC Public Health 2011; 11: 72
- World Health Organization: MPOWER: A policy package to reverse the tobacco epidemic. Geneva: World Health Organization; 2008.