1Editor's Comment前插12Diseases analysis during medical tours following Chinese Yushu, Lushan and Jiuzhaigou earthquakesLI Zhiqiang, SHENG Jun, YE Lijuan, KANG Xia, LIU Da, LI Yunming, ZHENG WeiORIGINAL ARTICLES421-4243Relationships between training burnout and calling orientation in new military recruits:The mediating and moderating role of self-efficacyZHANG Yanjun, DING KuiORIGINAL ARTICLES425-4294Analysis of the incidence of various diseases in a Chinese peacekeeping infantry battalion in South SudanWEI Guoxing, GUO Guanghui, NIU JunORIGINAL ARTICLES430-4325Health emergency skills competition in Chinese Hubei province in 2017: Analysis of results of physical and chemical blind sample testingQIN Jun, GUAN Xuhua, SUN Qian, ZHENG Zhaohui, CHEN Li, WEN Sheng, TANG LinORIGINAL ARTICLES433-4366Comparison of effects between manual intraosseous infusion device and ejection-type intraosseous infusion device under cold conditionSUN Rui, TIAN Jing, JING Guihong, ZHANG Xintong, WANG RanORIGINAL ARTICLES437-4407Efficacy of artificial thighbone replacement in the treatment of femoral neck fractures in the elderlyLIU Dibin, FU Yu, ZHAN LiliORIGINAL ARTICLES441-4448Antenatal maternal depression and its influencing factors for Chinese second-child and first-child pregnant womenLU Xiulian, FENG ShaozhenORIGINAL ARTICLES445-4509Application of continuous nursing quality management in emergency nursing of cardiology departmentNI HongORIGINAL ARTICLES451-45410Foreign helicopter emergency medical services system: The status and implicationsXIAO Qingtao, ZHONG XinMONOGRAPH455-45911UN peacekeeping medical services in humanitarian assistance:Challenges and countermeasuresQIU Lei, YU Min, GUO DongMONOGRAPH460-46312Thoughts on financial security of emergency rescue and disaster relief in military hospitalsWANG Sheng, YANG Guang, WANG HaixiaMONOGRAPH464-466 