1. Reducing health care costs by reducing the need and demand for medical services;Fries;N Engl J Med,1993
2. A strategy of preventive medicine;Rose,1992
3. Clinical preventive health care;The Canadian Task Force on the Periodic Health Examination,1994
4. Guide to clinical preventive services;Preventive Services Task Force,1989
5. Care of old people: a framework for progress. Occasional paper;Royal College of General Practitioners;Roy Coll Gen Pract Occ Pap,1990