1. LWL-University Klinik Hamm, Hamm, Germany
2. Gynaecology and Andrology in Small and Large Animals, Department of Obstetrics, University Veterinary Medicine Hospital, Giessen, Germany
3. Department of Biomathematics and Data Processing, University Veterinary Medicine Hospital, Giessen, Germany
4. University Children’s Hospital, Homburg/Saar, Germany
5. Center of Child and Adolescent Medicine, Justus Liebig University, Peptide Hormone Research Unit, Laboratory for Translational Hormone Analytics in Pediatric Endocrinology, Giessen, Germany