Metformin induces apoptosis and cell cycle arrest mediated by oOxidative stress, AMPK and FOXO3a in MCF-7 breast cancer cells - Queiroz, Eveline A. I. F. de; Puukila, Stephanie; Eichler, Rosangela; Sampaio, Sandra Coccuzzo; Forsyth, Heidi L.; Lees, Simon J.; Barbosa, Aneli M.; Dekker, Robert F. H.; Fortes, Zuleica Bruno; Khaper, Neelam (Plos One, 2014)