Post-overdose outreach programs in Massachusetts before and after the onset of the COVID-19 pandemic Post-overdose outreach programs in Massachusetts before and after the onset of the COVID-19 pandemic Click reference to see full abstract & publication Reference: Walley AY, Wang J, To C, et al. Post-overdose outreach programs in Massachusetts before and after the onset of the COVID-19 pandemic. J Subst Use Addict Treat. Published online September 10, 2025:209799. doi:10.1016/j.josat.2025.209799