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Fig. 1 | Respiratory Research

Fig. 1

From: Porcine versus bovine surfactant therapy for RDS in preterm neonates: pragmatic meta-analysis and review of physiopathological plausibility of the effects on extra-pulmonary outcomes

Fig. 1

Flow chart of the review and meta-analysis. Randomized controlled trials published as full articles, enrolling preterm neonates (gestational age < 37 weeks) with clinical and/or radiological evidence of RDS, comparing porcine and bovine surfactants (irrespective of their preparation method) and reporting at least one extra-pulmonary outcomes were included in the systematic review. The excluded studies were two full text duplicates reporting the same data with major methodological flaws and one conference abstract which did not respect the eligibility criteria. Details of excluded studies are available in [7]

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