Affiliation: | 1. Celltech R&2. D Ltd., Granta Park, Great Abington, Cambridge CB1 6GS, UK;3. Laboratory of Medicinal Chemistry and Laboratory of Virology and Chemotherapy, Rega Institute, Catholic University of Leuven, Leuven B-3000, Belgium;4. Randall Centre, New Hunt's House, King's College, Guy's Campus, London Bridge, London SE1 1UL, UK |