1. Boston University School of Public Health; Department of Epidemiology; 715 Albany Street Boston, MA USA 02118
2. University of Modena and Reggio Emilia; Research Center in Environmental, Nutritional and Genetic Epidemiology (CREAGEN), Department of Biomedical, Metabolic and Neural Sciences; Via Campi 287 Modena Italy 41125
3. University of Bern; Institute of Primary Health Care (BIHAM); Gesellschaftsstrasse 49 Bern Switzerland 3012
4. University of Modena and Reggio Emilia; Cochrane Italy, Department of Diagnostic, Clinical and Public Health Medicine; Via del Pozzo, 71 Modena Italy 41100
5. University of Applied Sciences Dortmund; Social Medicine and Public Health with Focus on Gender and Diversity, Department of Applied Social Sciences; Emil-Figge-Str. 44 Dortmund Germany D-44227
6. University of Bern; Institute of Social and Preventive Medicine (ISPM); Finkelhubelweg11 Bern Switzerland 3012
7. Nutrition Biomed Research Institute; Department of Nutritional Epidemiology and Clinical Studies; Argyle Place South Melbourne Victoria Australia 3053
8. Chairgroup of Complex Genetics and Epidemiology, School for Nutrition and Translational Research in Metabolism, Care and Public Health Research Institute; Unit of Nutritional and Cancer Epidemiology; Maastricht University Maastricht Netherlands
9. Maastricht University; Complex Genetics; Maastricht Netherlands
10. Paracelsus Medical University, Klinikum Nuremberg; Department of Internal Medicine, Division of Oncology and Hematology; Prof.-Ernst-Nathan-Str. 1 Nuremberg Germany D-90419
11. University of California Los Angeles; Biostatistics; Fielding School of Public Health 650 Charles Young Drive South, A2-125 CHS, Box 956900 Los Angeles California USA 90095-6900