1. Department of Anesthesiology, University Hospital Duesseldorf, D‑40225 Duesseldorf, Germany
2. Institute of Cardiovascular Physiology, Heinrich‑Heine‑University Duesseldorf, D‑40225 Duesseldorf, Germany
3. Department of Anesthesiology, Amsterdam University Medical Center (AUMC), Location AMC, 1100 DD Amsterdam, The Netherlands