Complementary use of ozone therapy in Covid-19 with ulcerative lesions. Case report . Ozone Therapy Global Journal, [S. l.], v. 12, n. 1, p. 59–70, 2022. DOI: 10.67442/7zjnfs02. Disponível em: https://journal.ozonetherapyglobaljournal.es/index.php/otgj/article/view/40. Acesso em: 23 aug. 2026.