Switching to sulphonylureas in children with iDEND syndrome caused by KCNJ11 mutations results in improved cerebellar perfusion. von Fendler, W, Pietrzak, I, Brereton, M, Lahmann, C, Gadzicki, M, Bienkiewicz, M, Drozdz, I, Borowiec, M, Malecki, M, Ashcroft, F, Mlynarski, WM