Xalqaro stomatologik tadqiqotlar assotsiatsiyasining (IADR) 96-kongressida Kaliforniya shtatidagi San-Frantsiskodagi Benjamin Chaffi tamaki tarkibidagi nikotin va kanserogenlar to'g'risida hisobot e'lon qildi.
The latest research and analysis of the landmark Framingham Heart Study by researchers at Vanderbilt University Medical Center suggest that the risk of lung cancer is drastically increased within 5 years of quitting smoking. World..