Incidence of anencephaly and other major malformations when oestriol excretion is very low.

Por Dean, L, Abell, D A, Beischer, N A
Publicado em 1977

Hydatidiform Mole and Coexistent Foetus, both with Triploid Chromosome Constitution

Por Beischer, N. A., Fortune, D. W., Fitzgerald, M. G.
Publicado em 1967

Œstrogen and Pregnanediol Excretion in Various Obstetrical Populations

Por Brown, J B, Beischer, N A, Campbell, D G, Evans, J H, Townsend, L
Publicado em 1970