1. Department of Pediatrics, Herlev University Hospital, Herlev, Denmark.
2. Department of Pediatrics, University Hospitals Leuven, Leuven, Belgium.
3. Department of Development and Regeneration, University of Leuven, Leuven, Belgium.
4. Interuniversity Institute for Biostatistics and Statistical Bioinformatics, KU Leuven–University of Leuven & Universiteit Hasselt, Leuven, Belgium.
5. Department of Pediatrics, Skejby University Hospital, Aarhus, Denmark.
6. Department of Endocrinology, Institut de Recerca Sant Joan de Deu, Hospital Sant Joan de Deu, Barcelona, Spain.
7. Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.