: Check date values in: |date= (help); Unknown parameter |coauthors= ignored (|author= suggested) (help)↑ Simpson, G (2007 Dec). "Suicidality in people surviving a traumatic brain injury: prevalence, risk factors and implications for clinical management". Brain injury : [BI]. 21 (13–14): 1335–51. doi:10.1080/02699050701785542. PMID 18066936. {{cite journal}}: Check date values in: |date= (help); Unknown parameter |coauthors= ignored (|author= suggested) (help)↑ 15.0 15.1 Miller, M (2012 Apr). "Suicide mortality in the United States: the importance of attending to method in understanding population-level disparities in the burden of suicide". Annual review of public health. 33: 393–408. doi:10.1146/annurev-publhealth-031811-124636. PMID 22224886. {{cite journal}}: Check date values in: |date= (help); Unknown parameter |coauthors= ignored (|author= suggested) (help)↑ Qin P, Agerbo E, Mortensen PB (2003). "Suicide risk in relation to socioeconomic, demographic, psychiatric, and fami