1. 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.
2. Cobb, R.A., Balgrie, R.J., Faber, R.G., Reece-Smith, H. The workload of a surgical unit in a district general hospital. Ann. R. Coll. Surg. Engl. 1989:71, 299–302.
3. Glass, R. E., Thomas, P. A. Surgical audit in a district general hospital: a stimulus for improving patient care. Ann. R. Coll. Surg. Engl. 1987: 69, 135–9.
4. Dunn, D. C. Audit of a surgical firm by microcomputer: five years experience. Brit. Med. J. 1988: 286, 687–91.
5. Gilmore, J. A., Griffiths, N. J., Connolly, J. C., Dunlop, A. W., Hart, S., Thompson, J. F. S., Todd, I. P. Surgical audit: a comparison of the workload and results of two hospitals in the same district. Brit. Med. J. 1980: 281, 1050–2.