1. Manchikanti L, Fellows B, Ailinani H, et al.: Therapeutic use, abuse, and nonmedical use of opioids: A ten-year perspective. Pain Physician. 2010; 13(5): 401-435.
2. Reddy A, de la Cruz M, Rodriguez EM, et al.: Patterns of storage, use, and disposal of opioids among cancer outpatients. Oncologist. 2014; 19(7): 780-785.
3. FDA: Disposal of unused medicines: What you should know. Available at http://www.fda.gov/Drugs/ResourcesForYou/Consumers/BuyingUsingMedicineSafely/EnsuringSafeUseofMedicine/SafeDisposalofMedicines/ucm186187.htm. Accessed February 15, 2023.
4. Office of Diversion Control: Drug disposal information. Available at http://www.deadiversion.usdoj.gov/drug_disposal/index.html. Accessed February 15, 2023.
5. Caraceni A, Hanks G, Kaasa S, et al.: European Palliative Care Research Collaborative (EPCRC); European Association for Palliative Care (EAPC). Use of opioid analgesics in the treatment of cancer pain: Evidence-based recommendations from the EAPC. Lancet Oncol. 2012; 13(2): e58-68-e68.