1. Institute of Epidemiology; Christian-Albrechts University of Kiel; Kiel Germany
2. Department of Epidemiology; Rollins School of Public Health; Winship Cancer Institute; Emory University; Atlanta GA USA
3. Section for Epidemiology; Department of Public Health; Aarhus University; Aarhus Denmark
4. Molecular Epidemiology Group; Max Delbrueck Center for Molecular Medicine (MDC); Berlin-Buch Germany
5. Department of Nutrition and Food Sciences; Nutritional Epidemiology; University of Bonn; Bonn Germany
6. Department of Epidemiology; German Institute of Human Nutrition Potsdam-Rehbrücke; Nuthetal Germany