Growth differentiation factor 15 predicts physical function impairment in Spanish older adults: a real-world prospective study - Ferreira de Campos, Karine; Garcia-Esquinas, Esther; Buno-Soto, Antonio; Sotos-Prieto, Mercedes; Carballo-Casla, Adrian; Rodriguez-Artalejo, Fernando; Ortola, Rosario (GeroScience, 2026)