1 Department of Cardiothoracic Surgery, University Hospital Muenster, Albert-Schweitzer-Campus 1, Building A1, D-48149 Muenster, Germany. Electronic address: am.dellaquila@gmail.com.
2 Department of Cardiothoracic Surgery, University Hospital Muenster, Albert-Schweitzer-Campus 1, Building A1, D-48149 Muenster, Germany.
3 Department of Anesthesiology, Intensive Care Medicine, and Pain Therapy, University Hospital Muenster, Muenster, Germany.