Fullformexpand.com, 2026. "PEPPEC." Accessed April 25, 2026. https://www.fullformexpand.com/peppec/presently-existing-patented-products-to-eradicate-coronavirus.
"PEPPEC." (n.d.). Fullformexpand.com. Retrieved April 25, 2026, from https://www.fullformexpand.com/peppec/presently-existing-patented-products-to-eradicate-coronavirus.
PEPPEC. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/peppec/presently-existing-patented-products-to-eradicate-coronavirus (Accessed: 25 April 2026).