1. The gatekeeper concept;Polister;Amer Coll of Surgeons Bulletin,1986
2. Reform and revolution in medicine, Part 1;Stamper;Ann Ophthalm,1986
3. Can the family physician avoid conflict of interest in the gatekeeper role? An opposing view;Stephens;J Fam Pract,1989
4. The cost effectiveness of primary care: A myth or a reality?;Weary;Arch Derm,1981
5. The current extent of “direct access” utilization;Allen;J Am Acad Derm,1981