Safety and efficacy of ribociclib plus letrozole in patients with HR+, HER2– advanced breast cancer: Results from the Spanish sub-population of the phase 3b CompLEEment-1 trial oleh Javier Salvador Bofill, Fernando Moreno Anton, Cesar Augusto Rodriguez Sanchez, Elena Galve Calvo, Cristina Hernando Melia, Eva Maria Ciruelos Gil, Maria Vidal, Begoña Jiménez-Rodriguez, Luis De la Cruz Merino, Noelia Martínez Jañez, Rafael Villanueva Vazquez, Ruben de Toro Salas, Antonio Anton Torres, Isabel Manuela Alvarez Lopez, Joaquin Gavila Gregori, Vanesa Quiroga Garcia, Elena Vicente Rubio, Juan De la Haba-Rodriguez, Santiago Gonzalez-Santiago, Nieves Diaz Fernandez, Agusti Barnadas Molins, Blanca Cantos Sanchez de Ibargüen, Juan Ignacio Delgado Mingorance, Meritxell Bellet Ezquerra, Sonia de Casa, Asuncion Gimeno, Miguel Martin