1. The Burlington randomized trial of the nurse practitioner;Spitzer;New Eng J Med,1974
2. Symposium on CHD Prevention Trials: Design Issues in Testing Life Style Intervention,1978
3. What is a Health Care Trial?;Spitzer;J Am Med Ass,1975
4. A plea for a discipline of health and medical evaluation;Henderson;Int. J Epid,1975
5. Hypertension screening and management in general practice;McWhinney;Prev Med,1978