Efficacy of Arsenicum Album Phosphorus- Tuberculinum (APT) Protocol in Long-term Prevention of COVID-19 – An Observational Study . Advancements in Homeopathic Research, [S. l.], v. 6, n. 4, p. 18–23, 2022. Disponível em: https://www.journals.acspublisher.com/index.php/ahr/article/view/1866. Acesso em: 12 aug. 2025.