Retraction Statement

The article "Effects of Low Luteinizing Hormone Serum Levels on Oocyte Retrieval, Fertilization Rate, and Embryo Quality during Controlled Ovarian Stimulation: Results from a Prospective Cohort Analysis" [Gynecol Obstet Invest. 2024;89(1):50-58; https://doi.org/10.1159/000534860] by Jessica Dragotto, Giovanni Buzzaccarini, Andrea Etrusco, Antonio Simone Laganà, Renato Venezia, Sanja Terzic, Miriam Dellino, Chrysoula Margioula-Siarkou, Vittorio Unfer, Bianca Bianco, Paolo Casadio, and Giovanni Bracchitta has been retracted by the Publisher and the Editors.Following publication, concerns were raised regarding the mean demographic values in the article. The authors responded to the request for comment and provided original data for the study. Review of the provided data raised further concerns regarding a nonnormal distribution of participant ages and a difference between the data reported in the article and that calculated from the data. The authors responded to the concerns and stated that the data provided is that underlying the article and discrepancies may be due to a small cohort size and differences in the statistical tools used for mean calculations. The response was found by the editors to be unsatisfactory to address the concerns, which was determined to undermine the reliability of the results in the article and therefore, the article has been retracted.Andrea Etrusco acknowledged the retraction decision and stated that his role in the study was limited to administrative/correspondence communications and stated that he had no role in the study design, conduct, data management, data verification, or analysis. Jessica Dragotto acknowledged the retraction decision and affirmed the above regarding the role of Andrea Etrusco in the study. Bianco Bianco acknowledged the retraction, agreed with the decision and stated that her role was limited to critical review of the manuscript after its completion and without responsibilities or any relation with the study as a whole, from the inception to the manuscript elaboration. The remaining authors did not respond to notification of the retraction decision within the timeframe specified.