1. 2nd Department of Critical Care Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
2. 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
3. Division of Internal Medicine and Clinical Immunology, Hôpital de la Conception, C2VN-INSERM U1263, Aix-Marseille University, Marseille, France
4. Department of Biological Sciences, University of North Carolina at Charlotte, Charlotte, North Carolina