1. Etiologic factors in hypertension;Palmer;New Engl. J. Med.,1931
2. Study of twins with normal blood pressures and with hypertension;Hines;Trans. Ass. Amer. Phycns,1957
3. Familial patterns in hypertension and coronary heart disease;Thomas;Circulation,1959
4. The inheritance of arterial blood pressure;Miall;Acta genet.,1957
5. Sampling Methods for Censuses and Surveys;Yates,1953