1. Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
2. Centre for Structural Science, Research Centre for Natural Sciences, Magyar tudósok Körútja 2, 1117 Budapest, Hungary
3. Department of Pharmaceutical Sciences, University of Padova, via Marzolo 8, 35131 Padova, Italy
4. Roche Pharmaceutical Research and Early Development, Roche Innovation Center Basel F. Hoffmann-La Roche, Grenzacherstrasse 124, 4058 Basel, Switzerland
5. Department of Nuclear Medicine, University Hospital Freiburg, Hugstetterstrasse 55, D-79106 Freiburg, Germany