Lung-Chang Chien (Epidemiology and Biostatistics), Aurora Holloway (Epidemiology and Biostatistics), Max Gakh (Environmental and Occupational Health), and Courtney Coughenour (Environmental and Occupational Health) published a research article titled "A novel gun law strength index and influential state gun laws for firearm homicide in the United States, 1999–2018" in the journal Public Health. The study  built a new state gun law strength index through an advanced statistical model to evaluate the contribution of all state gun laws to the new index and assess the association between the new index and firearm homicide mortality from 1999 to 2018.