RT Article T1 An epidemiological analysis of public mass shooters and active shooters: Quantifying key differences between perpetrators and the general population, homicide offenders, and people who die by suicide JF Journal of threat assessment and management A1 Lankford, Adam 1979- A2 Cox, Jennifer A2 Silver, James LA English YR 2021 UL https://krimdok.uni-tuebingen.de/Record/1912536927 DO 10.1037/tam0000166