Angela Yurika Purba, et al. “Characteristics of Procalcitonin Values and Absolute Neutrophil-Lymphocyte Ratio in Pneumonia Sepsis Patients in the Intensive Care Unit of a Hospital H. Adam Malik”. International Journal of Health and Pharmaceutical (IJHP), vol. 6, no. 1, Jan. 2026, pp. 52-57, doi:10.51601/ijhp.v6i1.516.