Expression of Concern: Arch Gynecol Obstet (2012) 285:1019–1023 https://doi.org/10.1007/s00404-011-2095-3

The Editor-in-Chief is issuing an editorial Expression of Concern for this article. Concerns have been raised about the data in Table 1 and the standard deviation of the bone density in each group. The raw datasets are not available for examination. Readers are therefore advised to interpret the results and conclusions with caution. None of the authors has responded to correspondence from the Publisher about this statement.