1000 Q&As for attending physicians in the emergency department 760 Q & As for attending physicians in the department of respiratory medicine 550 Q&As for attending physicians in the department of gastroenterology Leveraging lean in the emergency department 并列题名：Leveraging lean in the emergency department Arrhythmic patient in the emergency department 并列题名：Arrhythmic patient in the emergency department Avoiding common errors in the emergency department 并列题名：Avoiding common errors in the emergency department