Smoking can cause bronchitis, which leadleads to the overproduction of mucus, and the accumulation of mucus and toxic substancesubstances, which leadin turn leads to congest ofcongested lungs.
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받은편지함으로 가서 저희가 보낸 확인 링크를 눌러서 교정본을 받으세요. 더 많은 이메일을 교정받고 싶으시면:
또는