1. Research Department of Child Nutrition, University Hospital of Pediatrics and Adolescent Medicine, St. Josef‐Hospital Ruhr‐University Bochum Bochum Germany
2. Haale Germany
3. Department of Medical Informatics, Biometry and Epidemiology Ruhr‐University Bochum Bochum Germany
4. Institute of Nutritional Sciences and Department of Pediatrics Justus‐Liebig University Giessen Giessen Germany