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. 2017 Mar 27;159(5):903–905. doi: 10.1007/s00701-017-3095-2

Fig. 2.

Fig. 2

Conditional survival curves for patients who were alive at 6 months post-operatively (n = 187; solid lines) with 95% confidence intervals (shaded regions) and the expected survival of the matched general population (dashed line)