Al-Ali F, Barrow T, Duan L, Jefferson A, Louis S, Luke K, Major K, Smoker S, Walker S, Yacobozzi M. Vertebral artery ostium atherosclerotic plaque as a potential source of posterior circulation ischemic stroke: result from borgess medical center vertebral artery ostium stenting registry. Stroke. 2011 Sep; 42(9):2544-9.