“Assessment of Oxidative Stress Markers and Hearing Thresholds in Patients With Obstructive Sleep Apnea-Hypopnoea Treated With Cysteine and Superoxide Dismutase Therapy”. Acta Biomedica Atenei Parmensis, vol. 87, no. 3, Jan. 2017, pp. 253-8, https://mattioli1885journals.com/index.php/actabiomedica/article/view/5680.