COVID-19	Coronavirus disease-19
CEOSys	COVID-19 Evidence ecosystem
DIVI	German Interdisciplinary Association for Intensive Care and Emergency Medicine
ECMO	extracorporeal membrane oxygenation
PEEP	positive end-expiratory pressure
NUM	Nationales Forschungsnetzwerk der Universitätsmedizin
BMBF	Federal Ministry of Education and Research of Germany
SARS-CoV-2	severe acute respiratory syndrome coronavirus 2
ARDS	acute respiratory distress syndrome
ICU	Intensive Care Unit
HFNC	high flow nasal cannula
MV	mean value
SD	standard deviation
pECLA	pumpless extracorporeal lung assist
NIPPV	non-invasive positive pressure ventilation
HCWs	health care workers
NMBAs	neuromuscular blocking agents