1. Department and Clinic of Internal Medicine; University of Veterinary Medicine; István utca 2 Budapest 1078 Hungary
2. Department and Clinic of Reproduction; University of Veterinary Medicine; István utca 2 Budapest 1078 Hungary
3. Dermatology Unit; Clinic for Small Animal Internal Medicine; Vetsuisse Faculty; University of Zurich; Winterthurerstrasse 260 8057 Zurich Switzerland
4. Genclis; 15 rue du bois de la Champelle 54500 Vandoeuvre-les-Nancy France
5. Department of Clinical Sciences; College of Veterinary Medicine; NC State University; 1060 William Moore Drive Raleigh NC 27607 USA