Youssef, MD, MBA, E., Gao, MD, H.T., Russell, MD, C., Hassan, MD, S., Ardolic, MD, B. and Hahn, MD, B. 2018. Characteristics of prior emergency departments visits associated with subsequent opioid overdose. Journal of Opioid Management. 14, 5 (Sep. 2018), 327–333. DOI:https://doi.org/10.5055/jom.2018.0465.