Ten-Year Outcomes of PRE-COMBAT Trial
Ten-Year Outcomes of PRE-COMBAT Trial
This study evaluates Ten-Year Outcomes of PREmier of Randomized Comparison of
 Sirolimus-Eluting Stent Implantation Versus Coronary Artery Bypass Surgery for Unprotected
 Left Main Coronary Artery Stenosis(PRECOMBAT trial).
This study is an extended one of PRECOMBAT trial.
Inclusion Criteria:

 -  Subject group enrolled in PRECOMBAT trial