Serum cortisol but not oxidative stress biomarkers are related to frailty: results of a cross-sectional study in Spanish older adults

1. Marcos-Pérez, D.
2. Sánchez-Flores, M.
3. Maseda, A.
4. Lorenzo-López, L.
5. Millán-Calenti, J.C.
6. Pásaro, E.
7. Laffon, B.
8. Valdiglesias, V.