Altun Y, Balci HD, Aybal N Çom. FINE, a novel laboratory-based frailty index for elderly patients: a retrospective descriptive study. Sao Paulo Med J [Internet]. 2026 May 14 [cited 2026 Jul. 20];144(2):1-6. Available from: https://periodicosapm.emnuvens.com.br/spmj/article/view/3337