Affiliation: | 1. Laboratoire de Pharmacognosie, Université de Liège, Rue Fusch, 5, B-4000 Liège, Belgium;2. Department of Pharmacy, Chelsea College, University of London, Manresa Road, London SW3, England;3. U.C.B., rue Berkendael, 68, B-1060 Bruxelles, Belgium |