Department of Bioinformatics, Medical School, Georg August University of Göttingen, Goldschmidtstrasse 1, D-37077 Göttingen, Germany. anatolij.potapov@bioinf.med.uni-goettingen.de|Department of Bioinformatics, Medical School, Georg August University of Göttingen, Goldschmidtstrasse 1, D-37077 Göttingen, Germany. anatolij.potapov@bioinf.med.uni-goettingen.de|Department of Bioinformatics, Medical School, Georg August University of Göttingen, Goldschmidtstrasse 1, D-37077 Göttingen, Germany. anatolij.potapov@bioinf.med.uni-goettingen.de