1. OR Manager, Aug 2000, Vol 16, No 8; OR´s benchmark activities for the day of surgery 2. . Anesthesiology 2002; 96 A1145; K W Park: Scope of operating room cancellations for a busy university hospital vascular surgical service; MJA 20 June Ò005, Vol 182, nr 12; W N Schofield, Rubin, M Piza, Y Yin Lai, D Sindhusake, M 3. OR Manager, Aug 2000, Vol 16, No 8; OR´s benchmark activities for the day of surgery 4. Based on internal GE Healthcare customer study with Flevoziekenhuis in Almere Netherlands 50 patients per day within its OR. JB63091X 5. Based on internal GE Healthcare customer study with University Hospitals of North Midlands NHS trust JB61972XEb