For me, this case is not surprising, not unexpected and it goes along with the acute toxicity that we see from vaping happening in the most fragile parts of the lungs, for popcorn lung, the actual scientific name is bronchiolitis obliterans, and the bronchiolitis obliterans name implies obliterating the bronchioles, the most distal part of the lungs -- and that's what that disease did. It just knocked those completely out.