1. Ambulatory surgery data from hospitals and ambulatory surgery centers: United States, 2010;Hall;Natl Health Stat Report,2017
2. Acute pain medicine in the United States: a status report;Tighe;Pain Med,2015
3. Prevalence and predictors of postoperative pain after ear, nose, and throat surgery;Sommer;Arch Otolaryngol Head Neck Surg,2009
4. Relieving pain in America: a blueprint for transforming prevention, care, education and research,2011
5. U.S. Department of Health and Human Services. Pain management best practices inter-agency task force final report – 2019. Updates, gaps, inconsistencies, and recommendations.