1. Department of Paediatrics, Kuopio University Hospital, Kuopio, Finland
2. Department of Paediatrics, School of Medicine, University of Eastern Finland, Kuopio, Finland
3. Children’s Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
4. Folkhälsan Research Centre, Helsinki, Finland
5. Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
6. Department of Paediatrics, Tampere University Hospital, Tampere, Finland
7. Centre for Endocrinology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom