From the Outpatient Anaesthesia Service, Department of Radiology (YOA), Department of Anaesthesiology, Ondokuz Mayis University School of Medicine, Samsun (CK), Department of Anaesthesiology, The Private Emsey Hospital, Istanbul (SA), and Department of Anaesthesiology, Kocaeli University School of Medicine, Kocaeli, Turkey (KT).