A comparative study on the antimutagenic properties of aqueous extracts of Aspalathus linearis (rooibos), different Cyclopia spp. (honeybush) and Camellia sinensis teas - Van der Merwe, J D; Joubert, E; Richards, E S; Manley, M; Snijman, P W; Marnewick, J L; Gelderblom, W CA (Mutat Res, 2006)