Butler, PhD, S. F.; Black, PhD, R. A.; Grimes Serrano, PhD, J. M.; Wood, MPH, M. E.; Budman, PhD, S. H. Characteristics of Prescription Opioid Abusers in Treatment: Prescription Opioid Use History, Age, Use Patterns, and Functional Severity. J of Opioid Management 2018, 6, 239-252.