Timuda, Caesar Ensang, Susanthy Djajalaksana, Jani Jane Rosihaningsih Sugiri, Arinto Yudi Ponco Wardoyo, and Heri Sutanto. 2022. “Analysis of Results of Volatile Organic Compound (VOC) Measurements Using Breathanalyzer on COVID-19 Confirmed Patients With Pneumonia and Without Pneumonia”. International Journal of Health Sciences 6 (S9):3899-3910. https://doi.org/10.53730/ijhs.v6nS9.13506.