Retraction Note: Acta Neurochirurgica (2011) 153:2211–2217

https://doi.org/10.1007/s00701-011-1082-6

The Editor-in-Chief has retracted this article. After publication, concerns were raised regarding the data presented in the figures, specifically:

Fig. 1a appears highly similar to Fig. 1e in [1];

FIg. 1c appears highly similar to Fig. 1b in [2], Fig. 1c in [3] and Fig. 1c in [4];

Fig. 1f appears highly similar to Fig. 1f in [2] and Fig. 1d in [3];

Fig. 1g appears highly similar to Fig. 1c in [2];

All error bars appear to be the same within each graph.

The Editor-in-Chief therefore no longer has confidence in the presented data.

None of the authors have responded to any correspondence from the publisher about this retraction.