Levosimendan in patients undergoing extracorporeal membrane oxygenation after cardiac surgery: an emulated target trial using observational data oleh Julien Massol, Noémie Simon-Tillaux, Joanna Tohme, Geoffroy Hariri, Pauline Dureau, Baptiste Duceau, Lisa Belin, David Hajage, Yann De Rycke, Ahmed Charfeddine, Guillaume Lebreton, Alain Combes, Adrien Bouglé