It is a rare disease that affects approximately 1 in every 20,000 live-born infants, principally girls 65%, although this trend was not seen in the patients included in this report.
Es una enfermedad poco frecuente, que afecta aproximadamente a 1:20000 recién nacidos vivos con predominio femenino 65%,aunque en nuestros pacientes no se vio esta tendencia.