References
- Health Services Circular HC(89)2. Health Services Management, The future development of the Community Dental Services. Department of Health, London.
- O'Brien K. An Analysis of Retrospective Data Concerning the Provision of Orthodontic Treatment by the Community Dental Service. Br J Orthod 1990; 17: 101–107.
- Richmond S. A Critical Evaluation of Orthodontic Treatment in the General Dental Service in England and Wales. Ph.D Thesis 1990. University of Manchester.
- Richmond S, Shaw WC, Stephens CD, Webb WG, Roberts CT, and Andrews M. Orthodontics in the General Dental Service of England and Wales: a critical assessment of standards. Br Dent J 1993; 174: 315–327.
- Turbill EA, Richmond S, Wright JL. A Critical Assessment of Orthodontic Standards in England and Wales (1990–1991) in relation to prior approval. Br J Orthod 1996; 23: 221–228.
- Turbill EA, Richmond S, Wright JL. A Critical Assessment of High-earning Orthodontists in the General Dental Services of England and Wales (1990–1991). Br J Orthod 1998; 25: 47–54.
- O'Brien K. An Analysis of the Effectiveness of the Provision of Orthodontic treatment by the Hospital Orthodontic Service of England and Wales. Ph.D Thesis 1991. University of Manchester.
- O'Brien KD, Shaw WC, Roberts CT. The Use of Occlusal Indices in Assessing the Provision of Orthodontic Treatment by the Hospital Orthodontic Service of England and Wales. Br J Orthod 1993; 20: 25–35.
- Radnzic D. Effectiveness of Community Orthodontic Services in England and Wales. Ph.D. Thesis 1999. University of Manchester.
- Dillman DA. Mail and Telephone surveys: The Total Design Method. A Wiley Interscience Publication; 1978.
- Landis JR, Koch GG. The measurement of observer agreement for categorical data. Biometrics 1977; 33: 159–174.