1. Assiut University Hospital; Department of Obstetrics and Gynecology, Faculty of Medicine; Assiut Assiut Egypt 71511
2. Menoufiya University; Department of Obstetrics and Gynecology, Faculty of Medicine; Gamal Abdelnaser St Shebin El-kom City Egypt
3. Taibah University; Department of Obstetrics and Gynecology, Faculty of Medicine; Al-Madinah Saudi Arabia