1. Advocate Illinois Masonic Medical Center, Department of Anesthesiology, Chicago, IL 60657, USA
2. 1st Faculty of Medicine, Charles University, 110 00 Prague, Czech Republic
3. Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA
4. Nuvance Health Vassar Brothers Medical Center, Department of Anesthesiology, Poughkeepsie, NY 12601, USA
5. Department of Anesthesiology, University of Illinois, Chicago, IL 60612, USA
6. Department of Surgery, University of Illinois, Chicago, IL 60612, USA