Verma SK, Haye A, Saxena S, Junaid M, Sharma MC. 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. IRJAY [Internet]. 2021 Jun. 30 [cited 2023 Jun. 5];4(6):21-30. Available from: https://irjay.com/index.php/irjay/article/view/251