MicroRNA-30c expression level is an independent predictor of clinical benefit of endocrine therapy in advanced estrogen receptor positive breast cancer. - Rodríguez-González FG; Sieuwerts AM; Smid M; Look MP; Meijer-van Gelder ME; de Weerd V; Sleijfer S; Martens JW; Foekens JA (Breast cancer research and treatment, 2011)