Mohamed, H. A., Amer, H. W., & M. Ibrahim, M. F. "Effect of Gargling with Warm Salty Green Tea on Signs and Symptoms of Acute Upper Respiratory Tract Infection among Children", Journal of Pediatric Perspectives, 8, 6, 2020, 11409-11423. doi: 10.22038/ijp.2020.48081.3873