1. Trends in number of Medicare anesthesia claims by facility setting, 1994–2014;Miller;ASA Monitor,2015
2. Code of Federal Regulations 42 CFR 413.65(a)(2). https://www.gpo.gov/fdsys/pkg/CFR-2011-title42-vol2/pdf/CFR-2011-title42-vol2-sec413-65.pdf, Accessed date: March 12, 2018.
3. Same-day cancellation in ambulatory surgery: a retrospective review at a large academic tertiary referral center;Smith;J Ambul Care Manage,2018
4. Introduction to the HCUP State Ambulatory Surgery and Services Databases (SASD), issued February 2018,2018