Verdiana, V., and P. Puspitasari. “Correlation Between Leukocyte Count and Lymphatic Neutrophil Ratio to Procalcitonin in Covid-19 Confirmed Patients at Gresik Regional General Hospital: Hubungan Jumlah Leukosit Dan Rasio Neutrofil Limfosit Terhadap Procalcitonin Pada Pasien Terkonfirmasi Covid-19 Di Rumah Sakit Umum Daerah Gresik”. Indonesian Journal of Innovation Studies, vol. 22, Apr. 2023, p. 10.21070/ijins.v22i.845, doi:10.21070/ijins.v22i.845.