Fitriani, S.I., Handayani, N.S., Widyastuti, E. and Kurniati, A. 2023. THE TOTAL LEUKOCYTE COUNT OF ELDERLY PATIENTS CONFIRMED COVID-19 WITH/WITHOUT A VENTILATOR IN A SURABAYA GENERAL HOSPITAL IN 2021. Journal of Vocational Health Studies. 7, 1 (Jul. 2023), 55–62. DOI:https://doi.org/10.20473/jvhs.V7.I1.2023.55-62.