1. Effective Care Research Unit, Department of Obstetrics and Gynaecology; Faculty of Medicine, College of Health Sciences, Nnamdi Azikiwe University, Nnewi Campus; PMB 5001, Nnewi Nigeria
2. Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics; Johns Hopkins University School of Medicine; Baltimore Maryland USA
3. Department of Obstetrics/Gynaecology; Nnamdi Azikiwe University Teaching Hospital; Nnewi Nigeria
4. Department of Obstetrics and Gynaecology; Faculty of Clinical medicine, College of Medicine, Anambra State University Amaku; Awka Nigeria
5. Department of Obstetrics and Gynaecology; Nnamdi Azikiwe University Teaching Hospital; Nnewi Nigeria