Beneficial Effects of Mifepristone Treatment in Patients with Breast Cancer Selected by the Progesterone Receptor Isoform Ratio: Results from the MIPRA Trial. - Elía A; Saldain L; Vanzulli SI; Helguero LA; Lamb CA; Fabris V; Pataccini G; Martínez-Vazquez P; Burruchaga J; Caillet-Bois I; Spengler E; Acosta Haab G; et al. (Clinical cancer research : an official journal of the American Association for Cancer Research, 2023)