Comparison of prognostic gene profiles using qRT-PCR in paraffin samples: A retrospective study in patients with early breast cancer - Espinosa E; Sánchez-Navarro I; Gámez-Pozo A; Marin A; Hardisson D; Madero R; Redondo A; Zamora P; Valiente B; Mendiola M; Barón M; Vara J (Plos One, 2009)