1. German Center for Growth, Development and Health Encouragement during Childhood and Youth, Berlin
2. Department of Obstetrics and Perinatal Medicine, Diakoniekrankenhaus Friederikenstift, Hanover
3. Section for Perinatal Medicine, Department of Obstetrics and Gynaecology, Technical University of Munich, Munich
4. Department of Pediatric Endocrinology and Diabetology, Charité University Medical Center, Berlin
5. Department of Occupational, Social and Environmental Medicine, University Medical Center Göttingen, Göttingen