1. Condensed Matter and Interfaces, University Utrecht, P.O. Box 80000, 3508 TA Utrecht, The Netherlands, Angiogenesis Laboratory, Research Institute for Growth and Development, Department of Pathology/Internal Medicine, Maastricht University and University Hospital, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands, Translational and Molecular Imaging Institute and Imaging Science Laboratories, Mount Sinai School of Medicine, One Gustave L. Levy Place, New York, New York 10029, and Biomedical NMR,...