http://eurodressage.com/2019/03/26/don-martillo-diagnosed-shivering
FYI: There is no definitive test for shivers like biopsy or blood pull, and diagnosis is usually made by clinical exams & general observance of symptoms… Sometimes shivers can red herring for PSSM[2], which is not uncommon in WBs and can be definitively tested.
The transparency seems a good step in the right direction, even if late. The decision to pull him from their roster even better. It’d be nice if other breeders/stations were as transparent about stallions in Don Martillo’s pedigree, several of which are known to have issues with PSSM[2] and/or cervical arthritis.