Determination of the Duration of the Dual Antiplatelet Therapy by the Degree of the Coverage of The Struts on Optical Coherence Tomography From the Randomized Comparison Between Everolimus-eluting Stents Versus Biolimus A9-eluting Stents

This clinical trial will be followed for a long time until the 5th and 10th years of patients who have been registered for the DETECT‐OCT study To assess the patient's status at 5‐ and 10‐year, follow‐up visits are scheduled at the outpatient visit if they are currently followed‐up at the registry. However, if there is no follow‐up observation at the current registrar, we will follow‐up the telephone survey and visit as much as possible. Patients who have already passed the 5‐year follow‐up period from January 2, 2013, the first time to register, will be followed up by medical records to confirm the progress. To track the progress to the 10‐year follow‐up, we will conduct prospective observations by telephone survey.