Shahsavand Davoudi A, Harandi H, Samiee R, Forghani S, Mohammadi K, Shafaati M. Ultrasound evaluation of gallbladder wall thickness for predicting severe dengue: a systematic review and meta‑analysis. Ultrasound J. 2025;17(1):12. doi:10.1186/s13089-025-00417-5