1. Laboratory for Functional and Metabolic Imaging (LIFMET), Institute of Physics, EPFL, 1015Lausanne, Switzerland
2. Mass Spectrometry Platform, Institute of Chemical Sciences and Engineering (ISIC), EPFL, 1015Lausanne, Switzerland
3. CortecNet, 7 Avenue du Hoggar, 91940Les Ulis, France
4. Department of Chemistry and Biotechnology, The University of Tokyo, Tokyo113-8656, Japan
5. Service of Nephrology, Department of Medicine, Lausanne University Hospital (CHUV), 1011Lausanne, Switzerland