Hakimi, A. A., Chen, L., Kim, P. H., Sjoberg, D. D., Glickman, L., Walker, M. R. and Russo, P. (2013) “The impact of metformin use on recurrence and cancer-specific survival in clinically localized high-risk renal cell carcinoma”, Canadian Urological Association Journal, 7(11-12), pp. e687–91. doi: 10.5489/cuaj.1447.