1. Divisions of Pediatric Endocrinology, University Children’s Hospitals, Bonn, Germany.
2. Divisions of Pediatric Endocrinology, University Children’s Hospitals, Erlangen, Germany.
3. Divisions of Pediatric Endocrinology, University Children’s Hospitals, Duesseldorf, Germany.
4. D-MATH, ETH Zurich, Zurich, Switzerland.