1 DONALD Study Dortmund, Department of Nutritional Epidemiology, Institute of Nutritional and Food Sciences (IEL), University of Bonn, Dortmund, Germany. alexy@uni-bonn.de.
2 Faculty of Food, Nutrition and Hospitality Sciences, University of Applied Science Niederrhein, Rheydter Str. 277, 41065, Mönchengladbach, Germany.