1. Murphy SL, Xu J, Kochanek KD (2013) Deaths: Final Data for 2010. National Vital Statistics Reports. Hyattsville, MD: National Center for Health Statistics 61.
2. Centers for Disease Control and Prevention (2013) Suicide Among Adults Aged 35–64 Years — United States, 1999–2010. MMWR Morb Mortal Wkly Rep 62..
3. Socioeconomic status and the occurrence of fatal and nonfatal injury in the United States;C Cubbin;Am J Public Health,2000
4. African-American suicide: a cultural paradox;JT Gibbs;Suicide Life Threat Behav,1997
5. IQ in early adulthood and later risk of death by homicide: cohort study of 1 million men;GD Batty;Br J Psychiatry,2008