1. Coulter A . The interface between primary and secondary care. In Roland M and Coulter A . (eds). Hospital referrals. pp 1–14 Oxford: Oxford General Practice Series, 1992.
2. O'Brien K, McComb J L, Fox N, Bearn D and Wright J . Do dentists refer orthodontic patients inappropiately?. Br Dent J 1996; 181: 132–136.
3. Bowden D, Pender N, Hussain J, Morris T and Russell J . An attempt to influence the referral of orthodontic patients to hospital orthodontic departments. Health Trends 1996; 28: 67–70.
4. General Dental Council. Specialist Dental Lists. London, April 1998.
5. Flasher H A . Wisdom tooth waiting lists. Br Dent J 1990; 168: 50.