Obstetric and neonatal outcomes will be registered after delivery by revising medical records such as: gestational age at delivery, prepartum hemoglobin, type of labor (spontaneous or induced and respective indication), type of delivery (eutocic, instrumental, antepartum or intrapartum cesarean section), indication of instrumental or cesarean delivery, cardiotocographic register characteristics (repeated severe variable decelerations, late decelerations, absence of variability), evidence of meconial fluid, neonatal morbidity (hypoglycemia, hypothermia, transient tachypnea, hyperbilirubinemia requiring phototherapy, meconium aspiration syndrome, admission to neonatal intensive care unit, metabolic acidosis, intraventricular hemorrhage, necrotizing enterocolitis, sepsis, seizures and asphyxia) and mortality.