Department of Emergency, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China;
Department of Emergency, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China;
Department of Emergency, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China;
Department of Emergency, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China;
Department of Ultrasound, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China;