Schneider L, Bessis R, Tabaste J L, Sarramont M F, Japhet N
Acta Genet Med Gemellol (Roma). 1979;28(4):299-301.
Biparietal diameter growth differs considerably in the twin gestation compared to the singleton gestation; thus the use of a specific standard is recommended. A shift toward lower values is noticed in monochorial twins. In the case of the abdominal diameter growth, instead, no significant difference is found between twins and singletons.