Something very interesting I just found...
I put Kang yell Choil on youtubes search bar and the first video that came up is this one here WAS PUBLISHED IN 2014, but interestengly the news about Chois discovery only came to general public very recently, wich proves that Choi and his team is working on it now for about 5 years now and, from what Ive heard so far, they have been making huge progress.
I know its all assumption, but its logical to assume that the only reason why he would be present at the most important event of dermathology on the East sife of.the globe to give an important speech is simply because he finally has something really concrete about his discovery.
I wouldnt be surprised if its really on an advanced stage.
August is the month that we should all look.forward when the event will occur.
Video: