Tzaneio General Hospital of Piraeus - 2 nd Department of Internal Medicine, National and Kapodistrian University of Athens Medical School - 3rd Department of Internal Medicine, - 4th Department of Internal Medicine, Thriasio General Hospital of Eleusis, Tzaneio General Hospital of Piraeus - 2 nd Department of Internal Medicine, Andreas Syggros Hospital - HIV Infection Unit, National and Kapodistrian University of Athens, University of Ioannina, National and Kapodistrian University of Athens, Hellenic Institute for the Study of Sepsis, National and Kapodistrian University of Athens Medical School - 1 st Department of Chest Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Scientific Institute for Research, Hospitalization and Healthcare (IRCCS) - Lazzaro Spallanzani National Institute for Infectious Diseases - INMI, Fondazione Policlinico Universitario A. Gemelli IRCCS - Section of Infectious Diseases, Hellenic Institute for the Study of Sepsis, Negrar di Valpolicella - IRCCS Sacro Cuore - Don Calabria hospital, University of Genoa - Department of Health Sciences (DISSAL), Università Vita-Salute San Raffaele - IRCCS San Raffaele Scientific Institute, University of Barcelona - Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hellenic Institute for the Study of Sepsis, G. Gennimatas General Hospital of Athens, National and Kapodistrian University of Athens, Academy of Athens - Biomedical Research Foundation, National and Kapodistrian University of Athens, Hellenic Institute for the Study of Sepsis, National and Kapodistrian University of Athens, National and Kapodistrian University of Athens, University of Athens, National and Kapodistrian University of Athens, National and Kapodistrian University of Athens, National and Kapodistrian University of Athens, National and Kapodistrian University of Athens, Academy of Athens - Biomedical Research Foundation, Democritus University of Thrace - Department of Internal Medicine, - Laiko General Hospital, Radboud University Nijmegen, Radboud University Nijmegen - Department of Internal Medicine, Radboud University Nijmegen - Department of Internal Medicine, Thriasio General Hospital of Eleusis, Hospital of Jesolo, General Hospital of Argolida, Fondazione Policlinico Universitario A. Gemelli IRCCS, Lazzaro Spallanzani National Institute for Infectious Diseases, University of Milan, National and Kapodistrian University of Athens, Thriasio General Hospital of Eleusis, University of Ioannina - 1st Department of Internal Medicine, Radboud University Nijmegen - Radboud Center for Infectious Diseases (RCI) and - 4th Department of Internal Medicine

National and Kapodistrian University of Athens, National and Kapodistrian University of Athens, National and Kapodistrian University of Athens, National and Kapodistrian University of Athens, National and Kapodistrian University of Athens Medical School - 1 st Department of Chest Medicine, National and Kapodistrian University of Athens, National and Kapodistrian University of Athens, National and Kapodistrian University of Athens, National and Kapodistrian University of Athens, National and Kapodistrian University of Athens, Northumbria University, National and Kapodistrian University of Athens Medical School - 1 st Department of Chest Medicine and 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)

- 4th Department of Internal Medicine, - 4th Department of Internal Medicine, - 4th Department of Internal Medicine, - 4th Department of Internal Medicine, University Hospital of Vienna Austria - Department of Thoracic Surgery, KAT Attica General Hospital - Intensive Care Unit, Radboud University Nijmegen - Department of Internal Medicine, National and Kapodistrian University of Athens Medical School - 1 st Department of Chest Medicine, Democritus University of Thrace - Department of Critical Care Medicine, General Hospital of Thessaloniki "G. Gennimatas" - Intensive Care Unit, General Hospital of Elefsis Latseion - Intensive Care Unit, Larissa University General Hospital - Department of Internal Medicine, “Aghios Dimitrios” Thessaloniki General Hospital - Intensive Care Unit, University of Patras - Department of Internal Medicine, University of Ioannina - Department of Critical Care Medicine, General Hospital of Larissa - Intensive Care Unit, Evangelismos General Hospital of Athens - 5th Department of Internal Medicine, Tzaneio General Hospital of Piraeus - Intensive Care Unit, National and Kapodistrian University of Athens Medical School - 1 st Department of Chest Medicine, Radboud University Nijmegen - Department of Internal Medicine, National and Kapodistrian University of Athens Medical School - 1 st Department of Chest Medicine, - 4th Department of Internal Medicine, Radboud University Nijmegen - Radboud Center for Infectious Diseases (RCI) and - 4th Department of Internal Medicine

affiliation not provided to SSRN, affiliation not provided to SSRN, National and Kapodistrian University of Athens, affiliation not provided to SSRN, National and Kapodistrian University of Athens Medical School - 1 st Department of Chest 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 and University of Ioannina - Respiratory Medicine Department