Sabar Hutabarat and Wahyu Indah Dewi Aurora, “Cycle Threshold (CT) and Neutrophil-To-Lymphocyte (NLR) Values As Predictors of Clinical Symptoms in Pediatric Covid-19 Cases: A Systematic Literature Review”, Int Jou of PHE, vol. 3, no. 2, pp. 696–712, Apr. 2024.