1. Centre for Biosystems and Genome Network Medicine, Ioannina University, Ioannina, Greece
2. Department of Surgery, University Hospital of Ioannina, Ioannina, Greece
3. Department of Surgery, ‘G Hatzikosta’ General Hospital, Ioannina, Greece
4. Department of Pathology, University Hospital of Ioannina, Ioannina, Greece
5. Department of Systems Biology, Biomedical Research Foundation of the Academy of Athens (BRFAA), Athens, Greece