Beneficial effects of colestipol-niacine therapy of the common carotid artery: 2- and 4-year reduction of intima-media thickness measured by ultrasound. - Blankenhorn,D.H.; Selzer,R.H.; Crawford,D.W.; Barth,J.D.; Liu,C.R.; Liu,C.H.; Mack,W.J.; Alaupovic,P. (Circulation, 1993)