| Date | Event | Description |
|---|---|---|
| 21 December 2017 | Amended | We have corrected an error in the data from Smith 1994 regarding the incidence of PDPH. The RR point estimates, confidence intervals and I‐square values were modified for the following comparisons Analysis 3.1. 5; 5, Analysis 3.2.1; and Analysis 3.4.1. However, these changes did not change the interpretations and conclusions of the published version. |
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