1. Department of Surgical Sciences, Uppsala University, Uppsala University Hospital, SE-751 24 Uppsala, Sweden.
2. Department of Genetics and Pathology, Rudbeck Laboratory, Uppsala University, SE-751 24 Uppsala, Sweden.
3. The Linnaeus Centre for Bioinformatics, Uppsala University, SE-751 24 Uppsala, Sweden.
4. Interdisciplinary Centre for Mathematical and Computational Modelling, Warsaw University, PL-02-106 Warszawa, Poland.