Editorial Expression of Concern: Arch Gynecol Obstet (2006) 274:279–283 https://doi.org/10.1007/s00404-006-0181-8

The Editor-in-Chief is issuing an editorial Expression of Concern for this article. Concerns have been raised about similarities between the baseline and outcome data reported for this study and those reported in [1]. The author has not been able to provide the original data for examination. Readers are therefore advised to interpret the results and conclusions with caution. The author has not responded to correspondence from the Publisher about this statement.