1. The National Surgical Quality Improvement Program in non-veterans administration hospitals: Initial demonstration of feasibility;Fink;Ann Surg,2002
2. Risk adjustment of the postoperative morbidity rate for the comparative assessment of the quality of surgical care: Results of the National Veterans Affairs Surgical Risk Study;Daley;J Am Coll Surg,1997
3. ACS-NSQIP: Semiannual Report January 2009
4. The impact of operative complexity on patient risk factors;Aust;Ann Surg,2005
5. The patient safety in surgery study: Background, study design, and patient populations;Khuri;J Am Coll Surg,2007