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Forest plot of the association between PEC/BW and SDB (snoring and OSA). Results are expressed as OR or WMD with 95% CI. PEC, preeclampsia; BW, birth weight; SDB, sleep-disordered breathing; OSA, obstructive sleep apnea; OR, odds ratio; WMD, weighted mean difference; CI, confidence interval. The numbers after authors were used to distinguish different groups within one trial.
