Age FactorsInfant, NewbornRespiratory Therapy Department, HospitalTreatment OutcomeFollow-Up StudiesTime FactorsClinical ProtocolsResearch DesignProspective StudiesQuality of LifeQuestionnairesProgram EvaluationNetherlandsCost-Benefit AnalysisLongitudinal StudiesRetrospective StudiesRecurrencePrevalenceRisk FactorsCohort StudiesCross-Sectional Studies