1 Department of Anesthesiology, Advocate Illinois Masonic Medical Center, 836 W Wellington Ave, Chicago, IL 60657, USA. Electronic address: vicko.gluncic@gmail.com.
2 Department of Anesthesiology, Reanimatology, and Intensive Care Medicine, Varaždin General Hospital, Varaždin, Ulica Ivana Meštrovića 1, Varaždin HR-42000, Croatia.
3 Department of Anesthesiology, Advocate Illinois Masonic Medical Center, 836 W Wellington Ave, Chicago, IL 60657, USA.