Conference ProceedingsThe Persistence of 3-Methylfentanyl (3-MF) in PennsylvaniaPresenting section:Toxicology2020Papsun, Donna M., Horsham PA; Fogarty, Melissa, Willow Grove PA; Kacinko, Sherri L., Horsham PA; Logan, Barry K., Horsham PAView the paperToxicology