TY CONF TI PREDICTIVE SIGNIFICANCE OF BIOCHEMICAL MARKERS OF SALIVA IN PATIENTS WITH LUNG CANCER COMBINED WITH COPD KW lung cancer KW COPD KW survival analysis KW prognosis KW saliva KW biochemistry JO XIV International Scientific Conference "System Analysis in Medicine" AU Bel'skaya, L.V. PY 2025 PB Far Eastern Scientific Center of Physiology and Pathology of Respiration