1. Diabetes mellitus;Williams, R.,1994
2. Guidelines on the management of diabetes in primary care;British Diabetic Association,1994
3. Clinical Standards Advisory Group. Standards of clinical care for people with diabetes,1994
4. Screening for diabetic retinopathy;Singer, D.E.; Nathan, D.M.; Fogel, H.A.; Schachat, A.P.;Ann Intern Med,1992
5. Screening for diabetic retinopathy by optometrists: eVectiveness and cost-eVectiveness. Centre for Health Economics Discussion Paper 137;Mason, J.; Drummond, M.,1995