1. Centers for Disease Control and Prevention, 2017. Web-based Injury Statistics Query and Reporting System. Available from: https://www.cdc.gov/injury/wisqars/
2. Suicide and unintentional poisoning mortality trends in the United States, 1987–2006: two unrelated phenomena?;IRH Rockett,2010
3. Time trends in coroners' use of different verdicts for possible suicides and their impact on officially reported incidence of suicide in England: 1990–2005;D Gunnell,2013
4. The impact of improving suicide death classification in South Korea: a comparison with Japan and Hong Kong;CH Chan,2015
5. Increases in drug and opioid overdose deaths—United States, 2000–2014;RA Rudd,2016