[Systematic registration of malformations].

This study concerns 727 cases of deformed children born in the Rhône-Alpes region in 1973. 61 maternity hospitals, out of 181 in the region, took part in the study. Data concerning sex, mortality, mother's age, age of gestation, gemellity, body weight and length, as well as frequency of genetic findings in the families are published. A classification of the types of malformation in relation to their frequencies is reported.