陈教授，您好，今年您在J Interv Cardiol 杂志上发表了一篇题为“Stent thrombosis after percutaneous coronary intervention for bifurcation lesions”的文章，您能否谈谈在分叉病变预防支架内血栓方面还需要重视和改进哪些方面？ Professor Chen， you have published an article entitled Stent thrombosis after percutaneous coronary intervention for bifurcation lesions on Journal of interventional cardiology， could you talk about what we should pay more attention to and improve in the aspect of Bifurcation lesions and Stent thrombosis?