https://www.selleckchem.com/pr....oducts/ly3023414.htm
These were two retrospective cohort and 13 cross-sectional studies. Thirteen of 15 articles support an association between recurrent croup and GERD. Although heterogeneity is high among studies that reported prevalence of GERD, there is less uncertainty in results for improvement to recurrent croup after GERD treatment. Most studies lacked a control group and all carry a moderate-to-high risk of bias. CONCLUSION There is limited evidence linking GERD to recurrent croup; Further research is needed to assess for causality as most studie
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