A reduction in serum IFN-γ, IL-1β, IL-6, and GM-CSF serves as potential markers for a positive outcome to lumbar epidural steroid injections - Pornpan Chalermkitpanit; Weerasak Singhatanadgige; Wicharn Yingsakmongkol; Teerachat Tanasansomboon; Manassanan Jitjumnong; Sittisak Honsawek (PLoS ONE, 2025)