Affiliation: | 1. Echocardiography Laboratory, University Hospital Zurich, Zurich, Switzerland;2. Department of Anesthesiology, University Hospital Zurich, Zurich, Switzerland;3. Siemens Medical Solutions USA Inc., Mountain View, California;4. Andreas Grüntzig Cardiac Catheterization Laboratory, Cardiology, University Hospital Zurich, Zurich, Switzerland;5. Department of Internal Medicine, University Hospital Zurich, Zurich, Switzerland;6. Cardiovascular Surgery, University Hospital Zurich, Zurich, Switzerland |