Warner MA, Shields SE, Chute CG. Major morbidity and mortality within one month of ambulatory surgery and anesthesia. JAMA. 1993; 270: 1437-1441.

Aldwinckle RJ, Montgomery JE. Unplanned admission rates and postdischarge complications in patients over the age of 70 following day-case surgery. Anaesthesia. 2004; 59:57-59.

Fleisher LA, Pasternak LR, Herbert R, Anderson GF. Inpatient hospital admission and death after outpatient surgery in elderly patients. Arch Surg. 2004; 139:67-72.

Kulkarni A, Brooks S, Pynsent PB. Is bilateral knee arthroscopy suitable as a day-case procedure? Knee. 2003; 10:287-289.

Simpson JP, Savarise MT, Moore J. Outpatient laparoscopic cholecystectomy: What predicts the need for admission? Am Surg. 1999; 65:525-528.

Voitk JA, Ignatius S, Schouten D, Mustard RA. Is outpatient surgery safe for the higher risk patient? J Gastrointest Surg. 1998; 2:156-158.

Serra AS, Roig MP, Lledo JB et al. The learning curve in ambulatory laparoscopic cholestectomy. Surg Laparosc Endosc Percutan Tech. 2002; 12:320-324.

Thomas S, Singh J, Bishnoi PK, Kumar A. Feasibility of day-care open cholecystectomy: evaluation in an inpatient model. ANZ J Surg. 2001; 71:93-97.

Lombardi JV, Calligaro KD, Dougherty MJ. Safety and cost savings of endovascular procedures: Are outpatient interventions feasible when combined with open surgery? Vasc Endovasc Surg. 2002; 36:231-235.

Shindelman LE, Ninnul GB, Curtiss SI, Konigsberg SF. Ambulatory endovascular surgery: Cost advantage and factors influencing its safe performance. J Endovasc Surg. 1999; 6:160-167.

Asch HL, Lewis PJ, Moreland DB, et al. Prospective multiple outcomes study of outpatient lumbar microdiscectomy: Should 75 to 80% success rates be the norm? J Neurosurg. 2002; 96:34-44.

Case C, Johantgen M, Steiner C. Outpatient mastectomy: Clinical payer and geographic influences. Health Serv Res. 2001; 36:869-884.

Chander J, Vanitha V, Lal P, Ramteke VK. Transurethral resection of the prostate as catheter-free day-case surgery. BJU International. 2003; 92:422-425.