1. Epidemiology, Biostatistics and Prevention Institute University of Zurich Zurich Switzerland
2. Center for Psychiatric Rehabilitation Universitäre Psychiatrische Dienste Bern (UPD) and University Hospital of Psychiatry and Psychotherapy, University of Bern Bern Switzerland
3. Department of Pediatric Hematology and Oncology University Children's Hospital Basel (UKBB) and University of Basel Basel Switzerland
4. Institute of Social and Preventive Medicine University of Bern Bern Switzerland
5. University Clinic of Cardiology, Preventive Cardiology and Sports Medicine, Inselspital University Hospital Bern Bern Switzerland
6. Division of Endocrinology, Diabetes and Metabolism University Hospital Basel Basel Switzerland
7. Oslo Centre for Biostatistics and Epidemiology Oslo University Hospital Oslo Norway
8. Paediatric Department University Hospital, Julius‐Maximilians University Würzburg Germany
9. Therapy Department University Children's Hospital Basel (UKBB) and University of Basel Basel Switzerland
10. Paediatric Department University Hospital Augsburg Augsburg Germany