1. Institute of Pharmacology and Toxicology Faculty of Veterinary Medicine Justus Liebig University Giessen Giessen Germany
2. Steroid Research & Mass Spectrometry Unit, Pediatric Endocrinology & Diabetology Center of Child and Adolescent Medicine Justus Liebig University Giessen Giessen Germany
3. Small Animal Clinic, Internal Medicine and Department of Veterinary Clinical Sciences, Clinical Pathophysiology and Clinical Pathology Faculty of Veterinary Medicine Justus Liebig University Giessen Giessen Germany
4. Institute of Medicine Technical University Munich Munich Germany