1. Web-based Injury Statistics Query and Reporting System [Internet]. Centers for Disease Control and Prevention. 2017 [cited 10 April 2017]. Available from: https://www.cdc.gov/injury/wisqars/index.html.
2. Depression and suicide;K Achté;Psychopathology,1986
3. Handbook of Depression;A Berman,2010
4. Hopelessness, depression, and attempted suicide;K Minkoff;American Journal of Psychiatry,1973
5. Elevated suicide rates at high altitude: Sociodemographic and health issues may be to blame;M Betz;Suicide and Life-Threatening Behavior,2011