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World Health Organization. Director-General's Office. Communications Office ,  [Only 100% smoke-free environments adequately protect from dangers of second-hand smoke, Seuls des environnements 100% sans fumée protègent efficacement contre les dangers du tabagisme passif]

World Health Organization. Director-General's Office. Communications Office ,  [Only 100% smoke-free environments adequately protect from dangers of second-hand smoke, Seuls des environnements 100% sans fumée protègent efficacement contre les dangers du tabagisme passif]