Accident and Emergency Unit的用法和样例：
- Accident and emergency departments of major public hospitals had 2521359 attendances,or 6908 per day.
- All of them sought medical treatment from the Accident and Emergency Department of North District Hospital.
- She attended the Accident and Emergency Department of Yan Chai Hospital and did not require hospitalisation.
- Notes : (1) Accident and emergency attendances include first and follow-up attendances.