1 Institute of Genetics, Vetsuisse Faculty, University of Bern, 3001, Bern, Switzerland.
2 Instituto de Genética Veterinaria (IGEVET), CCT La Plata - CONICET - Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata (UNLP), CP1900, La Plata, Buenos Aires, Argentina.
3 Division of Clinical Neurology, Department of Clinical Veterinary Medicine, Vetsuisse Faculty, University of Bern, 3001, Bern, Switzerland.