affiliation not provided to SSRN, - Laiko General Hospital, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, KAT Attica General Hospital, affiliation not provided to SSRN, affiliation not provided to SSRN, Aristotle University of Thessaloniki - Fourth Department of Internal Medicine, Aristotle University of Thessaloniki, affiliation not provided to SSRN, University of Ioannina, Università degli Studi di Bari “Aldo Moro” (UNIBA), affiliation not provided to SSRN, National and Kapodistrian University of Athens, - First Department of Propaedeutic and Internal Medicine, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, National and Kapodistrian University of Athens, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, KAT Hospital, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN and National and Kapodistrian University of Athens

affiliation not provided to SSRN, University of Ioannina and affiliation not provided to SSRN