1. Surgeon volume and operative mortality in the United States;Birkmeyer;N Engl J Med,2003
2. American Board of Thoracic Surgery. Certification: operative requirements. Available at www.abts.org/sections/certification/operative_requirements/index.aspx. Accessed April 18 2012.
3. www.surgicalreview.org/coe-programs/overview. Surgical Review Corp.; 2012. Accessed online December 15, 2011.
4. Surgeon volume and hospital resource utilization;Arndt;Inquiry,1995
5. Morbidity of 10,110 hysterectomies by type of approach;Makinen;Hum Reprod,2001