Ashburn NP, Ryder CW, Angi RM, Snavely AC, Nelson RD, Bozeman WP, McGinnis HD, Winslow JT, Stopyra JP. One-Year Mortality and Associated Factors in Patients Receiving Out-of-Hospital Naloxone for Presumed Opioid Overdose. Ann Emerg Med. 2020 05; 75(5):559-567.