1 Gesellschaft fuer Bioanalytik Muenster e.V, Muenster, Germany.
2 Nanomedicine and Molecular Imaging Group, Clinical Medicine, Trinity Translational Medicine Institute (TTMI), Trinity College Dublin, St James's Hospital, Dublin 8, Dublin, Ireland.
3 Laboratory for Biological Characterization of Advanced Materials (LBCAM), Trinity College Dublin, Dublin 8, Dublin, Ireland.
4 Trinity St James's Cancer Institute, Trinity College Dublin, St James's Hospital, Dublin 8, Dublin, Ireland.
5 Department of Biotechnology and Nanomedicine, SINTEF Industry, Trondheim, Norway. ruth.b.schmid@sintef.no.