1. Department
of Sexually Transmitted Diseases, Windeyer Institute of Medical
Sciences, Royal Free and University College Medical School, University
College London, London WC1E
6AU
2. Molecular Infectious Diseases
Group, Department of Paediatrics, Weatherall Institute of Molecular
Medicine, University of Oxford, Oxford OX3 9DU, United
Kingdom
3. Department of
Clinical Pharmacology, University of Zimbabwe Clinical School,
Parirenyatwa Hospital, Harare,
Zimbabwe