Wirakusuma, Ida Bagus Janantara, I Ketut Agus Somia, Ni Luh Putu Eka Arisanti, Ida Bagus Ngurah Rai, Ida Ayu Jasminarti Dwi Kusumawardani, Ni Wayan Candrawati, and I Gusti Ngurah Bagus Artana. 2022. “Correlation Between Alveolar-Arterial Oxygen Tension Difference Gradient Baseline With Spirometry Test in Severe Coronavirus Disease 2019 (COVID-19)”. International Journal of Health Sciences 6 (S9):2578-88. https://doi.org/10.53730/ijhs.v6nS9.12986.