Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, HR 10000 Zagreb, Croatia and Bioinformatics Institute, A*STAR, #07-01 Matrix, 138671 Singapore.|Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, HR 10000 Zagreb, Croatia and Bioinformatics Institute, A*STAR, #07-01 Matrix, 138671 Singapore.