1. Annual smoking-attributable mortality, years of potential life lost, and economic costs—United States, 1995–1999;Anonymous;MMWR Morb Mortal Wkly Rep,2002
2. Health risk associated with cigar smoking;Baker;JAMA,2000
3. Cigarette smoking among adults—United States, 2000;Anonymous;MMWR Morb Mortal Wkly Rep,2002