1. Institute of Medicine. Relieving Pain in America: a Blueprint for Transforming Prevention, Care, Education, and Research. Vol. 26, Journal of Pain & Palliative Care Pharmacotherapy. Washington, DC: The National Academies Press; 2012.
2. Centers for Disease Control. Annual Surveillance Report Of Drug-related Risks And Outcomes [Internet]. 2017 [cited 2018 Apr 13]. Available from:
https://www.cdc.gov/drugoverdose/pdf/pubs/2017-cdc-drug-surveillance-report.pdf
3. Centers for Disease Control. Prescription Opioid Overdose Data [Internet]. [cited 2018 Apr 13]. Available from:
https://www.cdc.gov/drugoverdose/data/overdose.html
4. Pattinson KTS. Opioids and the control of respiration. Br J Anaesth Oxford University Press. 2008;100(6):747–58.
5. Dowell D, Haegerich TM, Chou R. CDC guideline for prescribing opioids for chronic pain—United States, 2016.[Erratum appears in MMWR Recomm Rep. 2016;65(11):295]. Morb Mortal Wkly Report Recomm Reports. 2016;65(1):1–49.