Department of Pain Treatment Tangdu Hospital of the Fourth Military Medical University Xi'an 710038 China;
Department of Pain Treatment Tangdu Hospital of the Fourth Military Medical University Xi'an 710038 China;
Department of Epidemiology Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment the Fourth Military Medical University Xi'an 710032 China;
Department of Pain Treatment Tangdu Hospital of the Fourth Military Medical University Xi'an 710038 China;
Department of Epidemiology Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment the Fourth Military Medical University Xi'an 710032 China;
Department of Epidemiology Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment the Fourth Military Medical University Xi'an 710032 China;