Haemodynamic Optimization by Oesophageal Doppler and Pulse Power Wave Analysis in Liver Surgery: A Randomised Controlled Trial. oleh Aarne Feldheiser, Velizara Pavlova, Karin Weimann, Oliver Hunsicker, Martin Stockmann, Mandy Koch, Alexander Giebels, Klaus-Dieter Wernecke, Claudia D Spies