The PLATINUM randomized trial enrolled @ patients treated with either the platinum chromium PROMUS Element everolimus-eluting stent ( PtCr-EES ; Boston Scientific , Natick , MA , USA ) or the predicate cobalt chromium PROMUS/XIENCE V EES ( CoCr-EES ; manufactured as XIENCE V by Abbott Vascular , Santa Clara , CA , USA also distributed as PROMUS by Boston Scientific ) , including @ patients from Japanese sites .