1 Ataturk University School of Medicine, Department of Anesthesiology and Reanimation, Turkey; Research Fellow of Anesthesiology Institute Outcomes Research Department, Cleveland Clinic, Cleveland, OH, USA. Electronic address: incei@ccf.org.
2 Research Fellow of Anesthesiology Institute Outcomes Research Department, Cleveland Clinic, Cleveland, OH, USA. Electronic address: zafeerm@ccf.org.
3 Research Fellow of Anesthesiology Institute Outcomes Research Department, Cleveland Clinic, Cleveland, OH, USA; Department of Pharmacology, National Defense College, Tokorozawa, Saitama, Japan. Electronic address: shimadt@ccf.org.