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Int J Fertil Steril. 2021 Oct;15(4):305-306. doi: 10.22074/IJFS.2021.244054. Epub 2021 Oct 16.

Effect of Adding Human Chorionic Gonadotropin to The Endometrial Preparation Protocol in Frozen Embryo Transfer Cycles.

International journal of fertility & sterility

Maryam Eftekhar, Elham Rahmani, Tahereh Eftekhar


  1. Department of Obstetrics and Gynecology, Yazd Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
  2. Department of Obstetrics and Gynecology, Bushehr University of Medical Sciences, Bushehr, Iran. Email: [email protected].
  3. Department of Obstetrics and Gynecology, Tehran University of Medical Sciences, Tehran, Iran.

PMID: 34913302 PMCID: PMC8530222 DOI: 10.22074/IJFS.2021.244054


In this article which was published in Int J Fertil Steril , Vol 6, No 3, Oct-Dec 2012, on Pages: 175-178, the authors found that Four sam ples from the control group were incorrectly included in the study. 4 cases were removed from the data and the data were re-analyzed. The results in Tables 1-3 are corrected. The authors would like to apologies for any inconvenience caused.

Copyright© by Royan Institute. All rights reserved.

Keywords: ART; Frozen Embryo ; HCG

Conflict of interest statement

The authors declare no conflicts of interest.

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