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Retraction Note: Vaginal progesterone for prevention of preterm labor in asymptomatic twin pregnancies with sonographic short cervix: a randomized clinical trial of efficacy and safety

The Original Article was published on 05 June 2015

Retraction to: Arch Gynecol Obstet (2016) 293:61–67 https://doi.org/10.1007/s00404-015-3767-1

The Editor-in-Chief has retracted this article. Contrary to the statement in the article, the authors did not obtain approval from a research ethics committee before conducting this interventional randomized control trial and therefore this study is in breach of the Declaration of Helsinki [1] and the editorial policy of the Journal. Concerns about the data reported in the article are under investigation by the University of Mansoura. Waleed El-Refaie stated on behalf of all co-authors that they do not agree with this retraction.

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Correspondence to Mohamed S. Abdelhafez.

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El-refaie, W., Abdelhafez, M.S. & Badawy, A. Retraction Note: Vaginal progesterone for prevention of preterm labor in asymptomatic twin pregnancies with sonographic short cervix: a randomized clinical trial of efficacy and safety. Arch Gynecol Obstet 304, 1113 (2021). https://doi.org/10.1007/s00404-021-06152-1

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