Reducing Overdose and Substance Use-related Stigma by Training Non-substance-using Friends and Family Members of People Who Use Opioids to Be Harm Reduction Champions

opioid overdose prevention, people who use opioids/people with opioid use disorder (oud), reduction of substance use-related stigma, non-substance-using people with a friend or family member who uses opioids, peer harm reduction support champions, drug overdose prevention, overdose prevention, interventional, na