共 19 条
- [1] BOUDENE C, 1973, ARCH MAL PROF MED, V34, P449
- [3] RANDOMIZATION BY GROUP - FORMAL ANALYSIS [J]. AMERICAN JOURNAL OF EPIDEMIOLOGY, 1978, 108 (02) : 100 - 102
- [4] Ducimetiere P, 1978, Rev Epidemiol Sante Publique, V26, P195
- [5] ETIENNE G, 1963, ANN BIOL CLIN, V21, P851
- [6] FARQUHAR JW, 1977, LANCET, V1, P1192
- [9] LEREN P, 1975, ACTA MED SCAND S, V588