1. Kolstad, P. and Stafl, A. (1982) Atlas of Colposcopy,3rd edn. Churchill Livingstone, London.
2. Luesley, D.M. (1992) Advances in colposcopy and management of cervical intra-epithelial neoplasia. Curr. Opin. Obstet. Gynecol., 4, 102–8.
3. Shafi, M.I. and Luesley, D.M. (1995) Management of low grade lesions-Follow-up or treat? Clin. Obstet. Gynaecol., 9, 1.
4. Shafi, M., Luesley, D.M. and Jordan, J.A. (1992) Mild cervical cytological abnormalities. Br. Med. J., 305, 1040.