1. Cobb, R. A., Reece-Smith, H., Faber, R. G. The effects of cuts in services on the work of a surgical unit in a district general hospital. Ann. R. Coll. Surg. Engl. 1989: 71, 303–5.
2. Stower, M.J., Hardcastle, J.D., Rourke, J.B. Surgical emergencies and manpower. Ann. R. Coll. Surg. Engl. 1984: 66, 117–9.
3. Perry, E.P., Crisp, J.C., Watkin, D.F.L Changes in emergency surgery between 1973 and 1982: audit of the workload of one surgical team. Ann. R. Coll. Surg. Engl. 1989: 71, 341–3.
4. British United Provident Association. Schedule of procedures 1989. London: BUPA 1989.
5. Quill, D. S., Devlin, H. B., Plant, A., Denham, K. R., McNay, R. A., Morris, D. Surgical operation rates: a twelve year experience in Stockton on Tees. Ann. R. Coll. Surg. Engl. 1983: 65, 248–53.