1. Department of Mathematics and Computer Science, University of Southern Denmark , 5230 Odense , Denmark
2. Department of Chemistry and Bioscience, Aalborg University , 9220 Aalborg , Denmark
3. Department of Health Technology, Technical University of Denmark , 2800 Kongens Lyngby , Denmark
4. Department of Biochemistry and Molecular Biology, University of Southern Denmark , 5230 Odense , Denmark