CJCP     2025 27 (1):  39-46    ISSN: 1008-8830  CN: 43-1301/R Disease burden of communicable diseases among children and adolescents aged under 20 years in China from 1990 to 2021 YANG Yang, ZHAO Ming-Yi Department of Pediatrics, Third Xiangya Hospital of Central South University, Changsha 410013, China Received: 2024-08-15  Revised: null  Online: null Supporting info null