Fig. 3From: Metformin increases survival in hormone receptor-positive, HER2-positive breast cancer patients with diabetesRecurrence risk of breast cancer according to each prognostic factor. (a) Hormone receptor-positive, human epidermal growth factor receptor-2 (HER2)-negative. (b) Hormone receptor-positive, HER2-positive. (c) Hormone receptor-negative, HER2-positive. (d) Hormone receptor-negative, HER2-negativeBack to article page