1. Department of General Pediatrics and Neonatology (M.H., B.K., H.G., S.A.W.), 35385 Giessen, Germany
2. Steroid Research Unit (M.F.H., S.A.W.), 35385 Giessen, Germany
3. Institute of Medical Statistics (R.-H.B.), Justus Liebig University, 35385 Giessen, Germany
4. Department of General Pediatrics and Neonatology (L.G.), University of Saarland, 66421 Homburg/Saar, Germany