1. Center for Microscopy-Microanalysis and Information Processing, Politehnica University of Bucharest, Bucharest, 060042, Romania
2. Department of Chemistry, Biology and Biotechnology, Perugia University, Via Elce di sotto, 8, 06123 Perugia, Italy
3. Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794, United States
4. National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
5. Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Oslo 0379, Norway