Department of Computer Science and Biomedical Informatics, University of Thessaly, Lamia, Greece.|Department of Bio and Health Informatics, Technical University of Denmark, Kgs Lyngby, Denmark.|Department of Computer Science and Biomedical Informatics, University of Thessaly, Lamia, Greece.|Department of Computer Science and Biomedical Informatics, University of Thessaly, Lamia, Greece.|Department of Computer Science and Biomedical Informatics, University of Thessaly, Lamia, Greece.