1Tricuspid annular plane systolic excursion for evaluation of right ventricular function in children with high alti-tude heart diseaseZHANG Qing-you, MA Yu-de, GAO Yu-mengORIGINAL CONTRIBUTION347-3512Predictive value of the ratio of venous-to-arterial carbon dioxide partial pressure difference to arteriovenous oxygen content difference for peritonitis-associated septic shock in childrenWANG Ying, TIAN Jia-hao, WANG YiORIGINAL CONTRIBUTION352-356,3843Analysis of clinical phenotypes of epilepsy related to CDKL5 deficiency disorder:A report of 20 casesMA Rong, LU Yan-li, ZHANG Xi-lianORIGINAL CONTRIBUTION357-3654Expression of HLA-DRB1 alleles in children with Helicobacter pylori infection and immune thrombocytopeniaGUO Jing, WU Run-hui, WU JieORIGINAL CONTRIBUTION366-3715Study on the age-and gender-specific reference intervals of trace elements and the relationship among the trace elements in children aged 10 to 12 years in ChongqingZHONG Hai-ying, WANG Yu-wei, TANG XianORIGINAL CONTRIBUTION372-3786A multicenter clinical study of tocilizumab in the treatment of systemic-onset juvenile idiopathic arthritisLIANG Fang-fang, LIU Da-wei, FAN Zhi-danORIGINAL CONTRIBUTION379-3847Study on the efficacy and safety of Bi Dou Yan oral liquid in the treatment of acute rhinosinusitis in childrenWEI Ping, LIU Da-xin, XU Zheng-minORIGINAL CONTRIBUTION385-390