RETRACTED: Effect of topical glyceryl trinitrate cream on pain perception during intrauterine device insertion in multiparous women: A randomized double-blinded placebo-controlled study

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/locate/withdrawalpolicy).

This article has been retracted at the request of the Editor-in-Chief and the journal's Ethics Committee.

After post-publication investigation, issues related to the following were identified in the article:

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  Significant inconsistencies between the manuscript published in the journal, the protocol registered in ClinicalTrials and an ASRM abstract published in October 2017 (https://doi.org/10.1016/j.fertnstert.2017.07.216) concerning the number of treatment arms, the number of patients included and the authors.

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  Many similarities with the manuscript of another randomized controlled trial published in 2017 in the journal Contraception (Abbas AM, Abdellah MS, Khalaf M, Bahloul M, Abdellah NH, Ali MK, Abdelmagied AM. Effect of cervical lidocaine-prilocaine cream on pain perception during copper T380A intrauterine device insertion among parous women: A randomized double-blind controlled trial. Contraception. 2017 Mar;95(3):251-6. https://doi.org/10.1016/j.contraception.2016.10.011), in particular the table of women's characteristics (Table 2), even though these are 2 different populations.

To facilitate a thorough examination and ensure the accuracy of the information reported in the article, the authors were asked for the raw data of the article.

In the absence of an answer from the authors in relation to the raw data, a decision to retract the article was made in accordance with the journal's commitment to upholding the highest standards of scientific integrity and accuracy in published research.

Prof. Ahmed Abbas does not agree with the retraction and disputes the grounds for it.