1. MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics, Tuebingen 72076, Germany
2. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
3. Centre de Biophysique Moléculaire, UPR 4301, CNRS, Université d’Orléans, rue Charles Sadron, Orléans 45071, France
4. Departament d’Enginyeria Química i Química Analítica, Facultat de Química, Universitat de Barcelona, c/Martí i Franquès, 1, Barcelona 08028, Spain
5. Institut de Biomedicina, Universitat de Barcelona, Barcelona 08028, Spain
6. Laboratory of Molecular and Cellular Neuroimaging, International Center for Primate Brain Research, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 20031, P. R. China