Affiliation: | 1. Faculty of Pharmacy, Department of Pharmaceutical Chemistry, University of Athens, Panepistimioupoli‐Zografou, 157 71 Athens (Greece), Fax.: (+30)?210‐7274747;2. Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London WC1E 7HT (UK), Fax.: (+44)?207‐636‐8739 |