1. Assistant Professor, Department of Anesthesiology, Washington University School of Medicine, St. Louis. Consultant.
2. Department of Anaesthesia.
3. Department of Obstetrics.
4. Department of Sexual Health.
5. Clinical Scientist, South London Public Health Laboratory and Department of Infection, Guy's, King's, and St. Thomas’ School of Medicine, Department of Virology, King's College Hospital NHS Trust.
6. Consultant, Department of Sexual Health, Chelsea and Westminister Hospital NHS Trust.
7. Clinical Scientist, Department of Immunology, King's College Hospital NHS Trust.
8. Department of Child Health.
9. Consultant.