Haemodynamic Balance in Acute and Advanced Heart Failure: An Expert Perspective on the Role of Levosimendan oleh Piergiuseppe Agostoni, Dimitrios T Farmakis, Jose M García-Pinilla, Veli-Pekka Harjola, Kristjan Karason, Dirk von Lewinski, John Parissis, Piero Pollesello, Gerhard Pölzl, Alejandro Recio-Mayoral, Alexander Reinecke, Patrik Yerly, Endre Zima