1. Department of Medical Epidemiology and Biostatistics; Karolinska Institutet; Stockholm Sweden
2. Department of Cancer Control Policy; Graduate School of Cancer Science and Policy; and National Cancer Control Institute; National Cancer Center; Goyang Republic of Korea
3. Department of Biosciences and Nutrition; Karolinska Institutet; Stockholm Sweden
4. Department of Epidemiology; Harvard School of Public Health; Boston MA USA
5. Department of Research; The Cancer Registry of Norway; Oslo Norway
6. Department of Genetic Epidemiology; Folkhälsan Research Center; Helsinki Finland
7. Department of Community Medicine; Faculty of Health Sciences; University of Tromsø; The Arctic University of Norway; Tromsø Norway