They have to make statements regarding risks unless they are proven completely otherwise.
Also, we don't know if Baxter is injecting into healthy tissue a part of their protocol. Then I can see the potential of new scar forming from punctures.
I wasn't knocking the MD's and PhD's that you mentioned. I was simply looking for more clarification as to how injecting a scar makes the SCAR function worse, when it doesn't function to begin with.
That being said, stating someone is correct just because they are a "leading expert" or have a phd,md,pe etc. is actually a fallacy in the topic of logic, reasoning and persuasion. You can google that. Politicians use that a lot as well. I took a course on it in undergrad.
News 
Market Data 
Discover 
