Systems Biology and Bioinformatics Group, Department of Computer Science. University of Rostock, 18051 Rostock, Germany. olaf.wolkenhauer@uni-rostock.de|Systems Biology and Bioinformatics Group, Department of Computer Science. University of Rostock, 18051 Rostock, Germany. olaf.wolkenhauer@uni-rostock.de|Systems Biology and Bioinformatics Group, Department of Computer Science. University of Rostock, 18051 Rostock, Germany. olaf.wolkenhauer@uni-rostock.de|Systems Biology and Bioinformatics Group, Department of Computer Science. University of Rostock, 18051 Rostock, Germany. olaf.wolkenhauer@uni-rostock.de