Fatma, A., A. Perveen, S. U. Rehman, and R. Khan. “Unani Medicine: Significance of Asbab-E-Sitta Zarooriya in Times of Pandemic COVID-19”. Journal of Drug Delivery and Therapeutics, Vol. 11, no. 1, Jan. 2021, pp. 156-61, doi:10.22270/jddt.v11i1.4636.