PDF) Severe Glutathione Deficiency, Oxidative Stress and Oxidant Damage in Adults Hospitalized with COVID 19: Implications for GlyNAC (Glycine and N Acetylcysteine) Supplementation Glutathione For Cancer Treatment: Boosting Immunity & Detox Excitotoxicity and Neurological Post COVID 19 Syndrome: Exploring Possible Connections of Pathophysiological Mechanisms Frontiers Understanding Selenium and Glutathione as Antiviral Factors in COVID 19: Does the Viral Mpro Protease Target Host Selenoproteins and Glutathione Synthesis? The Roles of Glutathione and Oxidative Stress in Diabetes and COVID 19 Elevated plasma level of the glycolysis byproduct methylglyoxal on admission is an independent biomarker of mortality in ICU COVID 19 patients Scientific Reports