The National Canine Health & Wellbeing Committee Chairperson, Dr Karen Hedberg has requested for the following link relating to an interesting paper on head shape and syringomyelia be circulated. 

Dr Hedberg highlights this is the type of thing we need to then direct Judges away from "extreme head types".

http://www.cgejournal.org/content/pdf/2052-6687-1-9.pdf