Erratum to: Naunyn-Schmied Arch Pharmacol (2010) 381:207-219

10.1007/s00210-009-0468-y

The original version of this article unfortunately contained a mistake. The values in line 17 of the Meta-analyses section should be RR 0.96, 95% CI, 0.87-1.07; p = 0.49.