It seems to be fairly popular for Drs. of many fields to "make statements". You can usually tell they are conjecture when they do not refer to a specific study. Seems most times when you go to find it, it simply does not exist and they made the leap based on their own opionion.  

 

With his resume at hand perhaps you have a way of ferretting out what he based his comments on. 

Leslie Like
Silver Rain Weimaraners
Hillsboro, Oregon
silverrainweims@...
www.oregonweimrescue.org