"A Direct Comparison of Early and Late Outcomes with Three Approaches to Carotid Revascularization and Open Heart Surgery"
JACC Jul 2013
http://content.onlinejacc.org/article.aspx?articleID=1723266
"Conclusions  Staged CAS-OHS and combined CEA-OHS are associated with similar risk of death, stroke or MI in the short term, with both being better than staged CEA-OHS. However, the outcomes are significantly in favor of staged CAS-OHS after the first year."