1. Davidge M, Harley M, Vickerstaff L, Yates J : The anatomy of large inpatient waiting lists. Lancet 1987; 1 796–7.
2. Donaldson LJ : Surgical waiting lists in the Northern Region—the 1987 census. Newcastle, Northern R.H.A., 1987.
3. British Medical Journal: Wide variations in hospital waiting times and lists. British Medical Journal 1985; 290: 577–8.
4. Interauthority Comparisons and Consultancy (IACC), Birmingham: Health Services Management Centre, Univesity of Birmingham. Unpublished Document, 1986.
5. McPherson K, Strong PM, Epstein A, Jones L : Regional variations in the use of common surgical procedures: within and between England and Wales, Canada and the United States of America. Soc. Sci. Med. 1981; 15A: 273–88.