Intestinal PerforationIleal DiseasesEnterocolitis, NecrotizingPneumoperitoneumFasciolidaeColonic DiseasesDigestive System FistulaInfant, Extremely Low Birth WeightTuberculosis, GastrointestinalEsophageal PerforationDigestive System Surgical ProceduresInfant, Premature, DiseasesFatal OutcomeInfant, NewbornTympanic Membrane PerforationUterine PerforationInfant, PrematureRetrospective StudiesDevelopmental DisabilitiesPeptic Ulcer PerforationCorneal PerforationTreatment Outcome