Excess iron in deep gray matter is associated with cognitive and functional decline: The mediating role of white matter myelin. - Jonghyun Bae; Angelique De Rouen; Zhaoyuan Gong; Nathan Zhang; Noam Y. Fox; Murat Bilgel; Christopher Bergeron; Luigi Ferrucci; Mustapha Bouhrara (NeuroImage, 2026)