Mandimutsira, Tinashe, Paul Tirivanhu Njowa, Constance Chingwaru, and Walter Chingwaru. 2020. “Plant based extracts show novel sanitising effects against Escherichia coli on romaine lettuce and cucumber”. Chulalongkorn Medical Journal 64 (2). Bangkok, Thailand. https://he05.tci-thaijo.org/index.php/CMJ/article/view/188.