Expression of concern to: J Bone Miner Metab (2011) 29:159–167 https://doi.org/10.1007/s00774-010-0210-3

The Editor-in-Chief is publishing an editorial Expression of Concern for this article because concerns about the reliability of the data have been raised [1]. These concerns are that statistical analysis of the summary data in this article suggests that the data appear to be identical with those reported in [2, 3] suggesting that this study was not conducted independently from the studies reported in [2, 3]. The original data from this study are not available for examination. Readers are therefore advised to interpret the results and conclusions presented in this article with caution. None of the authors have responded to correspondence from the Publisher about this statement.