1 Research unit for screening and epidemiology, University Hospital of Southern Denmark, Vejle, Beriderbakken 4, 7100, Vejle, Denmark; Department of Clinical Medicine, Aarhus University, Palle-Juul-Jensen Boulevard 82, 8200 Aarhus N, Denmark.
2 Research unit for screening and epidemiology, University Hospital of Southern Denmark, Vejle, Beriderbakken 4, 7100, Vejle, Denmark; Department of Regional Health Research, University of Southern Denmark, J.B. Winsløws Vej 19, 5000 Odense C, Denmark; Department of Clinical Medicine, Aarhus University, Palle-Juul-Jensen Boulevard 82, 8200 Aarhus N, Denmark.