On Oct 14, 2013, at 2:25 PM, Sukie Crandall <[log in to unmask]> wrote: >Having been asked, my statement about rates is based on discussions on >theFHL, FML, and F-G, as well as on personal experience with ferrets >over 32 years. Those are the Ferret Health List, Ferret Mailing List, >and the Ferret-Genetics list. So, not based on a study... Oh, but there ARE rate studies in other mammals, having read them years ago. The rates consistently were higher with Neural Crest variations in those studies. [Posted in FML 7935]