1. Microsoft Research, Cambridge, UK
2. Physics Area, International School for Advanced Studies, Trieste, Italy
3. Roche, Pharma Research and Early Development, Therapeutic Modalities, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd, Grenzacherstrasse 124, 4070, Basel, Switzerland
4. Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
5. Bank of Italy, Italy
6. Department of Materials Science and Engineering, Delft University of Technology, 2628 CD, Delft, The Netherlands