Problems such as placental aneuploidy, insufficiency and infections were grouped together in the same category at this time; the sequence of adaptive changes associated with hypoxy was unknown and the multiple factors associated with the results were not considered jointly.
En ese entonces, se agrupaban en lamisma categoría problemas tales como: aneuploidías, infecciones e insuficiencia placentaria; asimismo, se desconocía la secuencia de cambios adaptativos asociados con la hipoxia y no se consideraban de manera conjunta los múltiples factores asociados con los resultados.