Aging as an active player in Alzheimer's disease classification: Insights from feature selection in BrainAge models. - Jorge Garcia Condado; Ines Verdugo Recuero; Iñigo Tellaetxe-Elorriaga; Colin Birkhenbil; Maria Carrigan; Ibai Díez; Rachel F. Buckley; Asier Erramuzpe; Jesús M. Cortés (NeuroImage, 2025)