Profile Comorbid Factors, Age, and Gender Relationship with Severity of Pulmonary Infection Caused by COVID-19 Pulmonary Infection for the Period of June to August 2021 at Sidoardjo Regional General Hospital. - Muzaijadah Retno Arimbi; Atik Sri Wulandari; Lusiani Tjandra (International Journal of Social Health, 2025)