Validity Test For C-Reactive Protein and Ferritin Level in Moderate and Severe Covid-19 Patients. Majalah Kedokteran Bandung [Internet]. 2023 Dec. 31 [cited 2026 Jul. 23];55(4):254-9. Available from: https://journal.fk.unpad.ac.id/index.php/mkb/article/view/3025