1. Departments of Clinical Immunology, Royal Free Hospital and School of Medicine, London
2. Departments of Haemophilia Centre, Royal Free Hospital and School of Medicine, London
3. Departments of Genito-Urinary Medicine, Royal Free Hospital and School of Medicine, London
4. Departments of Public Health & Primary Care, Royal Free Hospital and School of Medicine, London
5. Academic Department of Genito-Urinary Medicine, University College and Middlesex School of Medicine, London, England