Effects of presurgical HIIT in hormone receptor-positive, HER 2-negative breast cancer cases: Two case reports from the GEICAM EFiK study - Perez-Bilbao, Txomin; Lopez-Tarruella, Sara; Alonso-Duenas, Maria; San Juan, Alejandro F; Ferreres-Garcia, Karla; Martin, Miguel; Peinado, Ana B; Rojo, Federico (Physiological Reports, 2025)