The challenge that COVID-19 represents for ozone therapy as complementary medicine. Ozone Therapy Global Journal, [S. l.], v. 10, n. 1, p. 1–5, 2020. DOI: 10.67442/n5b2pp69. Disponível em: https://journal.ozonetherapyglobaljournal.es/index.php/otgj/article/view/89. Acesso em: 23 aug. 2026.