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The predictive value of bedside ultrasound to restore spontaneous circulation in patients with pulseless electrical activity: A systematic review and meta-analysis

Fig 3

Forest plot of the subgroup analysis of cardiac activity on the restoration of spontaneous circulation.

(a) studies whose sample size was n<50; (b) studies whose sample size was n≥50.

Fig 3

doi: https://doi.org/10.1371/journal.pone.0191636.g003