1. Cannings, C., Thompson, E. A.: Ascertainment in the sequential sampling of pedigrees. Clin. Genet. 12, 208–212 (1977)
2. Feinleib, M., Garrison, R. J.: The contribution of family studies to the partitioning of population variation of blood pressure. In: The genetic analysis of common diseases: Applications to predictive factors in coronary heart disease (C. F. Sing, M. Skolnick, eds.). New York: Alan R. Liss, Inc. (In press, 1979)
3. Harburg, E., Schull, W. J., Erfurt, J. C., Schork, M. A.: A family set method for estimating heredity and stress—I. A pilot survey of blood pressure among Negroes in high and low stress areas, Detroit, 1966–1967. J. Chronic Dis. 23, 69–81 (1970)
4. Iselius, L., Morton, N. E., Rao, D. C.: Family resemblance for blood pressure. (In preparation, 1979)
5. Krieger, H.: Racial admixture in north-eastern Brazil. Ann. Hum. Genet., London 33, 423–428 (1970)