 I will be honest, I had not heard of that. The one thing I've learned over the decades, I've been doing this for over 50 years, is if you don't know, don't say. But I do think that there are, I'm not saying anything about this particular ganglia blocking, and it's used in pain management for sure. I don't know if it's useful, but there are many, many things out there touted to treat PTSD because it is so difficult and because people want relief.