BioMedResearch Biomedical and Life Sciences Collection National Library of Medicine (PubMed), National Institutes of Health, Bethesda, Maryland, USA Catalog of Human Genes and Disorders (On-line Mendelian Inheritance in Man), National Institutes of Health, Bethesda, MD AMEE-International Association for Medical Education Federation of European Biochemical Federation Societies Hellenic Society for Biochemistry and Molecular Biology Εθνικός Οργανισμός Φαρμάκων Region of Epirus ΚΕΕΛ-Κέντρο Ελέγχου και Πρόληψης Νοσημάτων HospitalWeb Ελληνικό Ινστιτούτο Υγιεινής & Ασφάλειας Της Εργασίας Ελληνικός Ερυθρός Σταυρός World Health Organization MedNet Ministry of Health and Social Solidarity University Library e-Librarys e-Course e-Class Ministry of National Education and Religious Affairs General Secretariat for Research and Technology (GSRT) Operational Programme for Education and Initial Vocational Training Erasmus-Conferences Tours & Travel (Professional Congress Organisers) University of Ioannina Other Universities and Research Institutes Sports Medicine Association of Greece Canon foundation Fulbright foundation