1List of revised items of field ambulance chestsJIAO Zhigang, GUO Hua, LI Xuan, LIU Zheng, ZHANG Xiangyang461-4632Administration of low-level laser on masticatory dysfunction of pilot: protocol for a randomized controlled clinical trialGAO Yuan, LIU Jing, LI Dongxia, WEN Kaixin, LONG Yunjing, LI Hongshi464-4673Laparoscopic cholecystolithotomy for military pilots and long-term effectLIU Chengli, PU Meng, WANG Cheng, ZHAO Gang, KONG Yalin, DAI Jingyao, HE Xiaojun, ZHANG Hui468-4704Prevalence of renal calculus in aircrews in the past four yearsXIA Ying, LI Jianlu, PEI Li, SUN Lili471-472,4755Applicability of 320 row volume CT in the diagnosis of lumbar spondylolysis in aircrewsJIANG Ruijing, MA Xiaoxuan, FAN Hongxia, ZHANG Jinlong, WANG Ping, FENG Xiuxian, LIANG Peng, YANG Fei, LI Xiangsheng473-4756Neck muscle strength and endurance of pilotsWANG Haixia, LI Baohui, WANG Quan, LIN Rong, XU Yan, JIN Zhao, WANG Hong, WEI Xiaoyang, YANG Jinghui, ZHANG Lihui, GENG Xichen476-4787Mental status and related risk factors among new recruits of Air Force from 2010 to 2019CHEN Qiao, XU Jie, YAN Wubing, LI Dongjie, SAI Xiaoyong479-482,4888Quality of life of ground crew in a navy flight regimentQIN Yingyi, LI Dongdong, LIANG Jizhou, WU Cheng483-4859Incidence of hyperuricemia in military pilots and ways of prevention and interventionLI Jing, CHEN Fei, ZHENG Hongxia, WANG Zheng, JI Jun, ZHOU Jiazhen486-48810Changes of serum inflammatory factors and tau protein levels in patients with acute intracerebral hemorrhage and their clinical significanceCHEN Zhuang, WEN Jinchong, JIANG Che, LIU Yan489-491,50811Effects and safety of MMF or cyclosporine A combined with prednisone in the treatment of primary refractory nephrotic syndromeLUO Dan, ZHAN Lu492-49612Simplified-regional citrate, argatroban and heparin-free anticoagulation in patients with hemodialysis at high risk of bleedingQIU Dejun, GAO Zhuo, LI Hongxia, HUANG Zhifang, HU Ruihai, LUN Lide497-501,50513Clinical characteristics and prognostic factors of patients with sudden deafness in different age groupsXU Wenwen, LIU Hongyi, WEI Zhihan, PU Yu, DENG Jie, GONG Xuecheng, QI Jinghuai, HAO Xuejing, WANG Xiao, HUO Xiaoxiu, GUO Rui502-50514Correlations between routine parameters of sperms and IVF-ET outcomeLIU Haijuan, HU Haixiang, XU Shaoqiang, LUO Shaobo506-50815Serum uric acid levels of middle-aged elderly patients with depressionWU Di, WU Wenjun, CUI Longbiao, WANG Huaning, ZHANG Yahong509-51016Applicability of heat preservation intervention based on high risk factors of surgical hypothermia in patients with colorectal cancerLI Qing, LEI Lumin, LI Juhong511-51317Effcacy of mindfulness-based stress reduction on satisfaction index and stress coping capacity of clinical nurses in neuro-intensive care unitLIANG Dongru, MENG Xuemei, MENG Yang, ZHANG Li514-51618Correlations between gene polymorphisms of the 5,10-methylenetetrahydrofolate reductase C677T and risk of unexplained recurrent spontaneous abortion in Chinese women: a Meta-analysisWANG Genzhu, WANG Xiaoying, XUN Zhikun, SUN Qiang, XING Baiqian, LI Zhongdong517-522 