1. Departments of Pediatrics, Medical University of Lübeck (O.H., P.-M.H., B.K., K.K.)
2. City Hospital Wolfsburg (G.H.G.S.), Children’s Hospital Hamburg-Altona (T.H.)
3. Department of Andrology (W.S.), University Hospital Hamburg-Eppendorf
4. and Department of Obstetrics and Gynecology (M.B.P.), Medical University of Lübeck, Germany