Impaired mobility, depressed mood, cognitive impairment and polypharmacy are independently associated with disability in older cancer outpatients: The prospective Physical Frailty in Elderly Cancer patients (PF-EC) cohort study. - Pamoukdjian F; Aparicio T; Zelek L; Boubaya M; Caillet P; François V; de Decker L; Lévy V; Sebbane G; Paillaud E (Journal of geriatric oncology, 2017)