Sources (1) CNN |
| (2) FBI |
| (3) National Center for Statistics and Analysis |
| (4) Institue of Medicine |
| (5) CDC |
| (6) American Foundation for Suicide Prevention |
| (7) American Cancer Society |
| (8) National Academy of Sciences' Institute of Medicin |
| (9) Center for Disease Control (CDC), NCHS Leading Causes of Death |
| (10) National Cancer Institute |
| (11) CDC, Smoking Attributable Deaths |
| (12) CDC, Cigarette Smoking-Related Mortality |