Cytotoxicity of Selenium-Enriched Chinese Kale (Brassica oleracea var. alboglabra L.) Seedlings Against Caco-2, MCF-7 and HepG2 Cancer Cells, Luang-In, Vijitra, Saengha Worachot, Buranrat Benjaporn, Chantiratikul Anut, and Ma Nyuk Ling , Pharmacognosy Journal, June 2020, Volume 12, Issue 4, p.674-681, (2020)