1. Department of EmergencyChina‐Japan Friendship HospitalBeijingP. R. China
2. Department of GastroenterologyChina‐Japan Friendship HospitalBeijingP. R. China
3. Surgical Intensive Care UnitChina‐Japan Friendship HospitalBeijingP. R. China
4. Department of GeriatricChina‐Japan Friendship HospitalBeijingP. R. China