1 Cardiovascular Institute, Hospital Clínico San Carlos, Madrid, Spain.
2 Cardiothoracic Anesthesiology and Intensive Care, Department of Anesthesiology and Intensive Care Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
3 Division of Cardiovascular and Thoracic Anesthesiology, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN. Electronic address: Ramakrishna.harish@mayo.edu.