Acknowledgements
The authors of the articles in the thesis summarized here thank all participants in the Västerbotten Intervention Study, the Northern Sweden MONICA Project and the Mammography Screening Project. Thanks also to Åsa Ågren, Veronica Hellström, John Hutilainen and Hubert Sjödin of the Northern Sweden Medical Biobank, Umeå University Hospital, and to Le Thu Trinh and Kerstin Näslund of the Department of Medical Biosciences (Clinical Chemistry and Pathology, respectively), Umeå University, for excellent technical assistance; to Robert Johansson of the Oncological Center, Umeå University Hospital, and Hans Stenlund of the Department of Public Health and Clinical Medicine, Epidemiology, for advice on statistical procedures; and to Lotta Ingri and Björn Tavelin who managed the Prostate Cancer Registry. The studies were supported by the Swedish Cancer Society, the Cancer Research Foundation in Northern Sweden, the Swedish Research Council, the Swedish Council for Working Life and Social Research, the Strategic Research Foundation, the King Gustav V and Queen Viktoria Foundation, the Västerbotten and Norrbotten County Councils and the Faculty of Medicine at Umeå University.