1Understanding and applying pulmonary function testing correctly in childrenLIU Chuan-he, ZHENG Jin-pingEDITORIAL408-4112Characteristics of lung function changes in children with bronchial asthmaLIU Chuan-he, LI Shuo, SHAO Ming-junSYMPOSIUM412-4163Characteristics of pulmonary function changes in chil-dren with interstitial lung diseasesXU Yong-shengSYMPOSIUM416-4204Determination of small airway dysfunction and its clinical significanceHUANG Yi-jie, AI TaoSYMPOSIUM420-4255Clinical application of exercise challenge testing in chil-drenWANG NingSYMPOSIUM426-4296Issues in clinical application of tidal breathing lung func-tion testLIU Sha, ZHANG Ming-xiangSYMPOSIUM429-4337Clinical value of tidal breath lung function test in diagnosis and management of infants with asthmaDONG Xiao-yan, ZHOU YuanSYMPOSIUM433-4378Clinical application of determination of exhaled nitric ox-ide in children with airway diseasesJIANG Wen-huiSYMPOSIUM437-4409Association of a 4-locus gene prediction model of asthma with the asthma predictive index and atopy in chil-drenSubspecialty Group of Pediatric Allergy and Asthma, the Chinese Society of AllergyORIGINAL CONTRIBUTION441-44610A study on serum glucagon level in hypoglycemia childrenHUANG Shu-yue, CHEN Xiao-bo, SONG Fu-yingORIGINAL CONTRIBUTION447-451,46811Analysis of clinical characteristics of Chlamydia trachomatis pneumonia at early infancyHUANG Miao-feng ZHENG Yue-jieORIGINAL CONTRIBUTION452-45812Distribution of central sleep apnea in children with obstructive sleep apnea hypopnea syndromeCUI Fei-fei, CHEN Chao, LIU JingORIGINAL CONTRIBUTION459-462