VERMA, S. K.; HAYE, A.; SAXENA, S. .; JUNAID, M. .; SHARMA, M. C. . Fifatrol, An Ayurvedic Formulation- A Prospective Multi-Center Observational Study On The Symptoms of Upper Respiratory Tract Infections: DOI: https://doi.org/10.47223/IRJAY.2021.4604. International Research Journal of Ayurveda & Yoga, [S. l.], v. 4, n. 6, p. 21–30, 2021. DOI: 10.47223/IRJAY.2021.4604. Disponível em: https://irjay.com/index.php/irjay/article/view/251. Acesso em: 29 may. 2023.