University of Patras - Department of Internal Medicine, National and Kapodistrian University of Athens - 4th Department of Internal Medicine, National and Kapodistrian University of Athens, University of Ioannina, Aristotle University of Thessaloniki, G. Gennimatas General Hospital of Athens, Elpis General Hospital - Department of Internal Medicine, Scientific Institute for Research, Hospitalization and Healthcare (IRCCS) - Lazzaro Spallanzani National Institute for Infectious Diseases - INMI, Sotiria General Hospital of Chest Diseases of Athens - 2nd Department of Pulmonary Medicine, National and Kapodistrian University of Athens, General Hospital of Larissa, affiliation not provided to SSRN, Sotiria General Hospital of Chest Diseases of Athens - 10th Department of Pulmonary Medicine, Thriasio General Hospital of Eleusis - 2 nd Department of Internal Medicine, University of Brescia, Hospital of Jesolo, National and Kapodistrian University of Athens, Scientific Institute for Research, Hospitalization and Healthcare (IRCCS) - Lazzaro Spallanzani National Institute for Infectious Diseases - INMI, Korgialeneion-Benakeion General Hospital, National and Kapodistrian University of Athens, National and Kapodistrian University of Athens Medical School - Department of Therapeutics, Università Vita-Salute San Raffaele - IRCCS San Raffaele Scientific Institute, Sotiria General Hospital of Chest Diseases of Athens, Papageorgiou General Hospital of Thessaloniki - 1 st Department of Internal Medicine, affiliation not provided to SSRN, affiliation not provided to SSRN, Aristotle University of Thessaloniki, Negrar di Valpolicella - IRCCS Sacro Cuore - Don Calabria hospital, Sotiria General Hospital of Chest Diseases of Athens - 10th Department of Pulmonary Medicine, IRCCS Humanitas Research Hospital, affiliation not provided to SSRN, National and Kapodistrian University of Athens, Government of the United States of America - Veterans Affairs Medical Center (VAMC), National and Kapodistrian University of Athens, Korgialeneion-Benakeion General Hospital, General Hospital of Kerkyra - Department of Pulmonary Medicine,, Sotiria General Hospital of Chest Diseases of Athens, Fondazione Policlinico Universitario A. Gemelli IRCCS, National and Kapodistrian University of Athens - 4th Department of Internal Medicine, affiliation not provided to SSRN, General University Hospital of Larissa, affiliation not provided to SSRN, Radboud University Nijmegen - Radboud Center for Infectious Diseases (RCI), Democritus University of Thrace - Department of Internal Medicine, National and Kapodistrian University of Athens, University of Ioannina - 1st Department of Internal Medicine, Larissa University General Hospital - Department of Internal Medicine and National and Kapodistrian University of Athens - 4th Department of Internal Medicine

National and Kapodistrian University of Athens - 4th Department of Internal Medicine, National and Kapodistrian University of Athens Medical School - 3rd Department of Internal Medicine, University of Ioannina - 1st Department of Internal Medicine, Aristotle University of Thessaloniki - 1st Department of Internal Medicine, G. Gennimatas General Hospital of Athens - Department of Internal Medicine, Sotiria General Hospital of Chest Diseases - Department of Pulmonary Medicine, Sotiria General Hospital of Chest Diseases of Athens - 2nd Department of Pulmonary Medicine, Dipartimento Scienze di Laboratorio e Infettivologiche - Fondazione Policlinico Gemelli IRCCS, National and Kapodistrian University of Athens Medical School - 1 st Department of Critical Care and Pulmonary Medicine, Tzaneio General Hospital of Piraeus - 2 nd Department of Internal Medicine, IRCSS Sacro Cuore Hospital, - Department of Infectious – Tropical Diseases and Microbiology, Sotiria General Hospital of Chest Diseases of Athens - 10th Department of Pulmonary Medicine, Thriasio General Hospital of Eleusis - 2 nd Department of Internal Medicine, University of Brescia - Spedali Civili, Hospital of Jesolo - Department of Internal Medicine, National and Kapodistrian University of Athens Medical School - 1 st Department of Chest Medicine, Spallanzani Institute of Rome - Department of Internal Medicine, Korgialeneion-Benakeion General Hospital - 1 st Department of Internal Medicine, National and Kapodistrian University of Athens Medical School - Department of Therapeutics, IRCCS Ospedale San Raffaele & Vita-Salute San Raffaele University - Unit of Immunology, Sotiria General Hospital of Chest Diseases of Athens, Papageorgiou General Hospital of Thessaloniki - 1 st Department of Internal Medicine, KorgialeneionBenakeion General Hospital - 3rd Dpt of Internal Medicine and Infectious Diseases Unit, University of Genoa - Department of Health Sciences (DISSAL), Aristotle University of Thessaloniki - School of Medicine, Sotiria General Hospital of Chest Diseases of Athens - 10th Department of Pulmonary Medicine, Humanitas University - Department of Biomedical Sciences, Asklepieio General Hospital of Voula - 1 st Department of Internal Medicine, National and Kapodistrian University of Athens Medical School - 3rd Department of Internal Medicine, Aristotle University of Thessaloniki - 2 nd Department of Propedeutic Medicine, Konstantopouleio General Hospital - 2 nd Department of Internal Medicine, General Hospital of Kerkyra - Department of Pulmonary Medicine,, Sotiria General Hospital of Chest Diseases - Department of Internal Medicine, University of Patras - Department of Internal Medicine, Thriasio General Hospital of Eleusis - 2 nd Department of Internal Medicine, Democritus University of Thrace - Department of Internal Medicine, Larissa University General Hospital - Department of Internal Medicine and Radboud University Nijmegen - Radboud Center for Infectious Diseases (RCI)