
A nurse wearing protective clothing and face mask checks the blood on the ECMO machine as she takes care of a COVID-19 patient at the Extracorporeal Membrane Oxygenation (ECMO) department in the Karolinska hospital in Solna, near Stockholm, Sweden, on April 19, 2020 during the coronavirus COVID-19 pandemic. (Photo by Jonathan NACKSTRAND / AFP) (Photo by JONATHAN NACKSTRAND/AFP via Getty Images)