Retraction Note: BMC Pregnancy Childbirth 17, 160 (2017)
https://doi.org/10.1186/s12884-017-1349-x
The Editor has retracted this article as the authors were unable to provide evidence that they have received ethics approval for the full duration of this study in the hospital setting and were unable to provide evidence that they have received ethics approval for the parts of the study done in private settings. Abd Elaziz A. El Refaeey and Abdelhady Zaied do not agree to this retraction. Hosam Abdelfattah, Alaa Mosbah, Anas M. Gamal, Emad Fayla, Waleed Refaie, Rafik I. Barakat, Amal K. Seleem and Mohammed Maher have not responded to any correspondence from the editor/publisher about this retraction.