1. Institute for Bioinformatics and Translational Research; UMIT Hall in Tyrol Austria
2. Department of Computer Science; Universität der Bundeswehr München; Werner-Heisenberg-Weg 39 85577 Neubiberg Germany
3. Center for Combinatorics and LPMC-TJKLC, Nankai University; Tianjin 300071 People's Republic of China