1. Division of Biomedical
Sciences, School of Medicine, University of California—Riverside, Riverside, California 92521, United States
2. Magnetic
Resonance Center (CERM), University of Florence and Consorzio Interuniversitario Risonanze Magnetiche di Metallo Proteine (CIRMMP), Via L. Sacconi
6, 50019 Sesto Fiorentino, Italy