COMPARISON OF DIFFERENCES  IN CLINICAL MANIFESTATIONS, LABORATORY  FINDINGS AND OUTCOMES BETWEEN  PEDIATRIC COVID-19 PATIENTS HOSPITALIZED  DURING THE DELTA AND OMICRON PERIODS  AT NARESUAN UNIVERSITY HOSPITAL, THAILAND. SEATROPH. 2024;55(4):137-158. Accessed October 6, 2025. https://journal.seameotropmednetwork.org/index.php/jtropmed/article/view/1033