* Department of Gastroenterology Radcliffe Infirmary, Oxford, UK † Academic Department of Genito-Urinary Medicine, University College London Medical School and Camden and Islington Community Health Services NHS Trust, London, UK ‡ Division of Virology, University College London Medical Schools, London, UK
No takes yet. Share an insight, caveat, or question.
McGowan et al. (1996) studied this question.