1. Department of Mathematics and Computer Science, Philipps-University of Marburg, Marburg, Germany
2. Department of Bioinformatics, TUM Campus Straubing, Straubing, Germany
3. Department of Genome-Oriented Bioinformatics, Technical University of Munich, Freising, Germany
4. Laboratory of Bioinformatics, St. Petersburg State Polytechnic University, St. Petersburg, Russia