Affiliation: | VIRCO, Central Virological Laboratory,1. and TIBOTEC, Institute for Antiviral Research,2. B-2650 Edegem, Belgium; Klinikum der Johann Wolfgang-Göethe Universität, Zentrum der Inneren Medizin, Frankfurt, Germany3.; Conant Medical Group, San Francisco, California4.; and Glaxo Wellcome Research and Development, Stevenage, United Kingdom5. |