1 Department of Anaesthesiology and Operative Intensive Care Medicine, Charité-Universitätsmedizin Berlin, Campus Charité Mitte and Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany. Susanne.koch@charite.de.
2 Columbia University New York, Joseph Mailman School of Public Health, Master of Bioethics Program, New York, USA.