Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) World Health Organization,"WHO Report on the Global Tobacco Epidemic, 2009 : Implementing Smoke-free Environments. Geneva : World Health Organization",http://www.who.int/tobacco/mpower/2009/en/index.html,,,2009,,,,https://cir.nii.ac.jp/crid/1571698601328754048,