1. Department of Bioinformatics, Technische Universität München, Wissenschaftszentrum Weihenstephan, Freising, Germany
2. Institute for Information Transmission Problems (Kharkevich Institute), RAS, Moscow, Russia
3. Institute of Science and Technology Austria, Klosterneuburg, Austria
4. Laboratory of Bioinformatics, RASA Research Center, St. Petersburg State Polytechnical University, Russia