1. Changes in cigarette smoking habits between 1955 and 1966;Ahmed;PHS Pub. No. 1000, Series 10,1970
2. The Framingham, Massachusetts Study twenty years later;Gordon,1970
3. Some characteristics related to the incidence of cardiovascular disease and death: Framingham Study, 18-year follow-up;Shurtleff,1974
4. Means at each examination and interexamination variation of specified characteristics: Framingham Study, Exam. 1 to Exam. 10;Gordon,1973