1 Institute for Bioinnovation, Biomedical Sciences Research Center "Alexander Fleming", Vari, Greece.
2 Institute for Fundamental Biomedical Research, Biomedical Sciences Research Center "Alexander Fleming", Vari, Greece.
3 Gastrointestinal Unit, 3rd Academic Department of Internal Medicine, National and Kapodistrian University of Athens, Sotiria Hospital, Athens, Greece.
4 Institute for Bioinnovation, Biomedical Sciences Research Center "Alexander Fleming", Vari, Greece; Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece. Electronic address: kollias@fleming.gr.