Very long-term outcome of coronary covered stents. Not all covered stents are the same

We have carefully read the manuscript of Harnek et al. We congratulate the authors for the publication of the most important registry to date regarding the clinical follow-up of covered stents (CS)1. Undoubtedly, the study provides very interesting information; however, we would like to raise some further points for consideration.

We believe that the results are not easily interpretable since the CS were used in very different clinical scenarios. In addition, the authors do not provide information on what CS type was used in each indication, which could have interfered with the results.

Given the significant differences ...