Fig. 1From: Letter to the editor regarding Extracorporeal membrane oxygenation for COVID-19: a systematic review and meta-analysisForest plot showing the proportion of non-survivors among COVID-19 patients requiring ECMO treatment: top) omitting patients who still were on ECMO or not discharged from the hospital, bottom) omitting studies who reported on patients who still were on ECMO or not discharged from the hospitalBack to article page