other Reproductive Andrology Original Article Original Article <span style="font-size:11pt"><span style="line-height:normal"><span sans-serif="" style="font-family:Calibri,"><span style="font-size:12.0pt"><span new="" roman="" style="font-family:" times="">The authors have been informed of some errors that occurred in the published paper. The errors are listed as: </span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:normal"><span sans-serif="" style="font-family:Calibri,"><span style="font-size:12.0pt"><span style="font-family:"Times New Roman","serif""></span></span></span></span></span> <ul> <li style="text-align:justify"><span style="font-size:11pt"><span style="line-height:normal"><span sans-serif="" style="font-family:Calibri,"><span style="font-size:12.0pt"></span><span style="font-size:12.0pt"><span new="" roman="" style="font-family:" times="">A paragraph has been added to Materials and Methods section about blinding.</span></span></span></span></span></li> <li style="text-align:justify"><span style="font-size:11pt"><span style="line-height:normal"><span sans-serif="" style="font-family:Calibri,"><span style="font-size:12.0pt"></span><span style="font-size:12.0pt"><span new="" roman="" style="font-family:" times="">The statistical test which has been used in tables I, II has been changed from chi-square test to </span></span><span style="font-size:12.0pt"><span new="" roman="" style="font-family:" times="">Fischer exact test.</span></span> </span></span></span></li> <li style="text-align:justify"><span style="font-size:11pt"><span style="line-height:normal"><span sans-serif="" style="font-family:Calibri,"><span style="font-size:12.0pt"></span><span style="font-size:12.0pt"><span new="" roman="" style="font-family:" times="">The study results were re-analyzed, and some p-values were modified in tables. </span></span></span></span></span></li> <li style="text-align:justify"><span style="font-size:11pt"><span style="line-height:normal"><span sans-serif="" style="font-family:Calibri,"><span style="font-size:12.0pt"></span><span style="font-size:12.0pt"><span new="" roman="" style="font-family:" times="">The lasst paragraph of discussion section has been removed. </span></span></span></span></span></li> </ul> <span style="font-size:11pt"><span style="line-height:normal"><span sans-serif="" style="font-family:Calibri,"><span style="font-size:12.0pt"><span style="font-family:"Times New Roman","serif""></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:normal"><span sans-serif="" style="font-family:Calibri,"><span style="font-size:12.0pt"><span new="" roman="" style="font-family:" times="">The authors wish to apologize for these errors. The online version of the article has been updated on August 29, 2021, and can be found at http://dx.doi.org/10.29252/ijrm. 15.4.231.</span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:normal"><span sans-serif="" style="font-family:Calibri,"><span style="font-size:12.0pt"><span style="font-family:"Times New Roman","serif""></span></span></span></span></span><br> &nbsp; hydroxy progestrone,decreasing preterm 423 423 http://ijrm.ir/browse.php?a_code=A-10-31-114&slc_lang=other&sid=1 Abbas Aflatoonian 0000-0002-2896-6136 No Department of Obstetrics and Gynecology, Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Hoora Amouzegar amuzegarhoora@yahoo.com 0000-0002-1142-6416 Yes Department of Obstetrics and Gynecology, Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Razieh Dehghani Firouzabadi 0000-0002-3157-6518 No Department of Obstetrics and Gynecology, Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.