1. Department of Pharmaceutical and Pharmacological Sciences, Università degli Studi di Padova, via F. Marzolo 5, 35131 Padova, Italy
2. Formulation Sciences, MedImmune Ltd., Granta Park, Cambridge CB21 6GH, United Kingdom
3. Centre for Drug Research, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, Helsinki FI-00014, Finland