1. The revised International Association for the Study of Pain definition of pain: concepts, challenges, and compromises;Raja;Pain
2. Prevalence of chronic pain and high-impact chronic pain among adults—United States, 2016;Dahlhamer;MMWR,2018
3. Management of pain in the United States—a brief history and implications for the opioid epidemic;Bernard;Health Serv Ins,2018
4. A short history of pain management;Collier;CMAJ,2019
5. A brief history of the opioid epidemic and strategies for pain medicine;Jones;Pain Ther,2018