Kidney transplantation - colour doppler and contrast-enhanced ultrasound in the early postoperative assessment of delayed graft function: retrospective results and pilot prospective findings. - Zanchetta M; Morabito M; Ripamonti M; Liepa L; Iori V; Adani GL; Coppola A; Fontana F; Inversini D; Carcano G; Ietto G (BMC surgery, 2026)