1. Departments of Pediatric Endocrinology (G.Bi., M.W., K.W.), University Children’s Hospital, D-72076 Tuebingen, Germany
2. Department of Medical Biometry (G.Bl.), University of Tuebingen, D-72074 Tuebingen, Germany
3. Mediagnost (M.L.), Gesellschaft für Forschung und Herstellung von Diagnostika GmbH, D-72770 Reutlingen, Germany
4. Neonatology (A.R.F.), University Children’s Hospital, D-72076 Tuebingen, Germany