Extracorporeal Circulation (ECLS/ECMO) for Cardio-circulatory Failure—Summary of the S3 Guideline - Boeken, Udo; Assmann, Alexander; Beckmann, Andreas; Schmid, Christof; Werdan, Karl; Michels, Guido; Miera, Oliver; Schmidt, Florian; Klotz, Stefan; Starck, Christoph; Pilarczyk, Kevin; Rastan, Ardawan; Burckhardt, Marion; Nothacker, Monika; Muellenbach, Ralf; Zausig, York; Haake, Nils; Groesdonk, Heinrich; Ferrari, Markus; Buerke, Michael; Hennersdorf, Marcus; Rosenberg, Mark; Schaible, Thomas; Köditz, Harald; Kluge, Stefan; Janssens, Uwe; Lubnow, Matthias; Flemmer, Andreas; Herber-Jonat, Susanne; Wessel, Lucas; Buchwald, Dirk; Maier, Sven; Krüger, Lars; Fründ, Andreas; Jaksties, Rolf; Fischer, Stefan; Wiebe, Karsten; Hartog, Christiane S.; Dzemali, Omer; Zimpfer, Daniel; Ruttmann-Ulmer, Elfriede; Schlensak, Christian; Kelm, Malte; Ensminger, Stephan (The Thoracic and Cardiovascular Surgeon, 2021)