1. Clinical Institute of Medical Genetics University Medical Centre Ljubljana Ljubljana Slovenia
2. Research Centre for Genetic Engineering and Biotechnology "Georgi D. Efremov" Macedonian Academy of Sciences and Arts Skopje Macedonia
3. Medical Faculty Institute of Human Genetics University of Belgrade Belgrade Serbia
4. Andrology Unit, Reproductive Unit Department of Obstetrics and Gynecology University Medical Centre Ljubljana Ljubljana Slovenia
5. Biotechnical Faculty Department of Animal Science University of Ljubljana Domžale Slovenia