1. Department of Obstetrics and Gynecology; Nnamdi Azikiwe University Teaching Hospital; Nnewi Nigeria
2. Department of Obstetrics and Gynaecology; University of Nigeria Teaching Hospital; Enugu Nigeria
3. Department of Obstetrics and Gynecology; David Geffen School of Medicine at UCLA; Los Angeles California USA
4. Measurement and Evaluation Unit; Department of Education Foundation; Nnamdi Azikiwe University; Awka Nigeria