Corrigendum: Shock Index, Pediatric Age-Adjusted Predicts Morbidity and Mortality in Children Admitted to the Intensive Care Unit - Kuo-Chen Huang; Ying Yang; Chao-Jui Li; Fu-Jen Cheng; Ying-Hsien Huang; Po-Chun Chuang; I-Min Chiu (Frontiers Media S.A., 2021)