Özden, A. V., and A. Perçin. “A Promising Method For Post-COVID/Long-COVID Syndrome: Noninvasive Vagus Nerve Stimulation: Noninvasive Vagus Nerve Stimulation For Covid-19”. Ejons International Journal on Mathematic, Engineering and Natural Sciences, vol. 7, no. 1, Mar. 2023, pp. 16-23, doi:10.5281/zenodo.8198614.