@smory2211 Thanks for your answer, that's good to know. Yes, maybe someone had DES revision with him. Unfortunately I cannot ask questions in the kakao DES group, because of their operation policies. So for those of us who would like to consult Dr Ko in the future, do we just have to wait until more information is available or can we still contact ILAC? I had to move my travel plans to the middle of June which is just around the time when he starts to accept new patients.