踦 ǿ ڳడ ִٸ, ǰӸ ƴ϶ ݿ ؾ ϴ ϳ . 踦 ǿ θ ڳ 踦 ǿ ɼ 4 ̻ Ÿ.
ΰ ۳ ' コ ŷ ķ(The Better Health Smoking campaign)' ûҳ ǥϸ " θ 10 4.9% ϴ ݸ, θ ʴ 10 1.2% ڰ ȴ" . Ǻ ̾ ű (Maggie Throup) "θ ڳ ش" ϸ, "̹ 簡 θ ڳ Ἲ Ѵٴ ߴ" . ̱ ۵б(Purdue University) ǥߴ. θ Ȥ ڸŰ ڳ೪ ûҳ ɼ ٰ Ѵ. " ڳడ ɼ 15 , ڸŰ ɼ 6 ̻ " ߴ. Ȳ ٸ ʴ. ѱǰ߿ ûҳ 80.3% ̶ ڰ ִ Ÿ. Ѵٴ Ŵ.
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α ع̶ Ҹ ûҳ鿡Դ طӴٴ ̴. ûҳ ƾ ߵ κ 11質 ϸ, ûҳ ϴ Ϲΰ ؼ ũ ȴ. 1989 ̱ǹѰ(Surgeon Genera) 25 Ŀ ڿ ؼ 2.5 Ҵ. ݸ ûҳ(15) 쿡 18.7 巯. ̿ܿ ûҳ '庴', 'ȣ ȯ' ü ǰ ǿ ģ. ûҳⰡ ϴ ñ ŭ ߴ ɼ ſ ũ. 谡 ڶ ϰ Į ϱ ̴. ó п 帶 Ѵ. ij Ʈ б(Universite de Montreal) α۸(Jennifer O'Loughlin) 2008 ûҳ Ű ʴ ɴ ؼ 2.54cm ۴ٰ ϱ ߴ.
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