1. Richard and Loan Hill Department of Biomedical Engineering, University of Illinois at Chicago, Chicago, IL, USA
2. Center for Biomedicine, Berlin, Charité—Universitatsmedizin, Germany
3. Institute of Geophysics, Polish Academy of Sciences, Warsaw, Poland
4. Richard and Loan Hill Department of Biomedical Engineering, the Department of Dermatology and the Department of Pediatrics, University of Illinois at Chicago, Chicago, IL, USA