1. Institute of Medical Sciences and Kosterlitz Centre for Therapeutics, School of Medicine, Medical Sciences and Nutrition; University of Aberdeen, Foresterhill; Aberdeen AB25 2ZD Scotland UK
2. Dipartimento di Chimica e Tecnologie del Farmaco; “Sapienza” Università di Roma; P.le A. Moro 5 00185 Rome Italy
3. Current affiliation: IRBM Science Park SpA; Via Pontina km 30 600 00071 Pomezia RM Italy
4. Center for Life Nano Science@Sapienza; Istituto Italiano di Tecnologia; Viale Regina Elena 291 00161 Roma RM Italy
5. Manchester Cancer Research Centre and Wolfson Molecular Imaging Centre; The University of Manchester; Palatine Road Manchester M20 3JJ UK
6. CRUK-EPSRC Cancer Imaging Centre in Cambridge and Manchester, Manchester Cancer Research Centre, Division of Pharmacy and Optometry; The University of Manchester; Oxford Road Manchester M13 9PT UK
7. C.N.R.-I.C.R.M.; via Mancinelli 7 20131 Milan Italy