Arredondo de Arreola, G [Frequency of external congenital abnormalities in abortions]. [electronic resource] - Boletin medico del Hospital Infantil de Mexico Jan 1992 - 32-8 p. digital Publication Type: English Abstract; Journal Article ISSN: 0539-6115 Subjects--Topical Terms: Abortion, SpontaneousAdultCongenital Abnormalities--epidemiologyFemaleHumansIncidenceInfant, NewbornMalePregnancyRetrospective Studies