Clinical significance of QT interval and Cardiac Enzyme in Carbon Monoxide Poisoning The Association of Meteorological and Day-of-the-week Factors with Patient Visits to Emergency Centers Cross-sectional Study of Physical Restraint Use in an Emergency Department Estimate the Cuff Inflation Volume to Maintain Safe Intracuff Pressure of an Endotracheal Tube Endoscopic Evaluation at Upper Gastrointestinal Injury in Patients with Noncaustic Drug Ingestion Emergency Residents` Current Status and Preferences for Shift Work During Extra-regular Working Time in Korea