In the study by Wilder, et al., a retrospective cohort of children requiring general anesthesia before the age of four years old was compared to matched controls who did not receive general anesthesia 3.
En su estudio, Wilder y cols. compararon de forma retrospectiva una cohorte de niños que requirieron anestesia general antes de los cuatro años de edad con unos controles pareados que no recibieron anestesia general 3.