1. Maria Parisi is a high-dependency unit nurse, Vasiliki Gerovasili is a pulmonologist, Efstathia Kampisiouli is a nursing specialization manager and surgical nurse specialist, Christina Goga is a pulmonologist, Christina Routsi is an associate professor of intensive care medicine, and Serafeim Nanas is a professor of intensive care medicine, First Department of Critical Care, National and Kapodistrian University of Athens, Evangelismos Hospital, Athens, Greece.
2. Stavros Dimopoulos is an internal medicine-intensive care medicine specialist, John Farman Intensive Care Unit, Addenbrookes Cambridge University Hospital, Cambridge, United Kingdom.
3. Efstathia Perivolioti is a consultant and Athina Argyropoulou is a consultant and director, Department of Clinical Microbiology, Evangelismos Hospital, Athens, Greece.
4. Sotirios Tsiodras is an associate professor of medicine and infectious diseases, University of Athens Medical School, 4th Department of Internal Medicine, Attikon University Hospital, Athens, Greece.