RT Journal Article SR Electronic T1 ECMO during the COVID-19 pandemic: moving from rescue therapy to more reasonable indications JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 2103262 DO 10.1183/13993003.03262-2021 VO 59 IS 2 A1 Christian Karagiannidis A1 Thomas Bein A1 Tobias Welte YR 2022 UL http://erj.ersjournals.com/content/59/2/2103262.abstract AB