A total of @ patients undergoing coronary stenting were treated with probucol and cilostazol combination therapy ( group ) or with cilostazol monotherapy ( group ) in a double-blind , randomized multicenter trial , and evaluated by virtual histology intravascular ultrasound ( VH-IVUS ) at baseline and @-month follow-up for changes in coronary plaque volume and composition at an index intermediate lesion with luminal narrowing @ % and @ % and for neointimal hyperplasia at the stented segment .