1. Clinic for Obstetrics, Gynecology and Andrology of Large and Small Animals with Ambulatory Service, Justus-Liebig- University, Giessen, Germany.
2. Clinic for Obstetrics, Gynecology and Andrology of Large and Small Animals with Ambulatory Service, Justus-Liebig- University, Giessen, Germany; Clinic for Veterinary Obstetrics and Gynecology, University of Van YYÜ, Van, Turkey.
3. Clinic for Veterinary Obstetrics and Gynecology, University of Van YYÜ, Van, Turkey.
4. Biomathematics and Data Processing Working Group, Justus-Liebig University, Giessen, Germany.