1. Department of Obstetrics and Gynaecology, El Obeid Maternity Hospital, El Obeid, Sudan
2. Sudan HIV/AIDS Working Group (SHAWG), Glasgow, UK
3. Department of Internal Medicine, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, UAE
4. Department of Obstetrics and Gynaecology, Faculty of Medicine & Health Sciences, University of Kordofan, El Obeid, Sudan
5. Diagnostic Centre, Faculty of Medicine & Health Sciences, University of Kordofan, El Obeid, Sudan
6. Department of Pathology, Faculty of Medicine & Health Sciences, University of Kordofan, El Obeid, Sudan
7. The Liverpool Centre for Sexual Health, Royal Liverpool University Hospital, Liverpool, UK
8. Public Health Laboratory Birmingham, National Infection Service, Heart of England Foundation NHS Trust, Birmingham, UK
9. MRC Clinical Trials Unit at University College London, London, UK
10. Department of Genitourinary Medicine, Royal Bournemouth Hospital, Bournemouth, UK