1. Commission on the Provision of Surgical Services. Report of the working party on guidelines for day surgery. The Royal College of Surgeons of England; March 1992.
2. Day case anaesthesia: the surgical perspective;Hitchcock;Surgery,1998
3. Day Surgery: an operational guide, Department of Health 2002.
4. Admission to hospital after day case surgery;Johnson;Ann R Coll Surg Engl,1990
5. Return hospital visits and hospital readmissions after ambulatory surgery;Mezei;Ann Surg,1999