John Raja, Nikil Niva, Ashttalakshmi Anjapuli, Suganya Poongavanam, Dineshkumar Sivakumar, Sasirekha Ranganathan, and Anbu Natarajan. 2021. “Efficacy of Siddha Medicine in the Treatment of COVID- 19 Patients - A Pilot Study”. International Journal of Ayurvedic Medicine 12 (3):610-17. https://doi.org/10.47552/ijam.v12i3.2030.