Plasma metabolomic profiling and functional disability in older adults - Pombo-Jimenez, Andres; Gonzalez-Beltran, Damian; Yevenes-Briones, Humberto; Banegas, Jose R; Rodriguez-Artalejo, Fernando; Lopez-Garcia, Esther; Caballero, Francisco Felix (JOURNALS OF GERONTOLOGY SERIES A-BIOLOGICAL SCIENCES AND MEDICAL SCIENCES, 2026)