Domagała K, Ziółek MA, Maroszek M, Szymczak K, Janik B, Bakier A. PERIOPERATIVE RISK STRATIFICATION AND OPTIMIZATION IN ELDERLY SURGICAL PATIENTS: A REVIEW OF MODERN STRATEGIES AND BIOLOGICAL MARKERS IN THE ERA OF VALUE-BASED HEALTHCARE. IJITSS [Internet]. 2026 Mar. 24 [cited 2026 Jun. 13];5(1(49). Available from: https://rspublisher.org/index.php/ijitss/article/view/5189