Diagnostic Value of the Combination of Serum TH1/TH2 Cytokines, Procalcitonin, and High-sensitivity C-reactive Protein for Predicting the Severity of Pneumonia. - Zeng H; Huang X; Zeng G; Qiu X; Li X; Zhang D; Zheng S (Iranian journal of allergy, asthma, and immunology, 2026)