1. Department of Emergency, Dali Bai Autonomous Prefecture People's Hospital, Dali, Yunnan 671000, P.R. China
2. Department of Laboratory, Dali Bai Autonomous Prefecture People's Hospital, Dali, Yunnan 671000, P.R. China
3. Department of Spine Surgery, Dali Bai Autonomous Prefecture People's Hospital, Dali, Yunnan 671000, P.R. China
4. Department of Medical Affairs, Dali Bai Autonomous Prefecture People's Hospital, Dali, Yunnan 671000, P.R. China
5. Department of Emergency, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
6. Department of Human Resources, Science and Education, Second People's Hospital of Baoshan City, Baoshan, Yunnan 678000, P.R. China