A. Ekbom

Spatial clustering of childhood leukaemia: summary results from the EUROCLUS project.

F. Levi, W. McWhirter, J. Michaelis, 1998, British Journal of Cancer.

Nationwide prevalence of inflammatory bowel disease in Sweden: a population‐based register study

M. Neovius, J. Ludvigsson, J. Askling, 2014, Alimentary pharmacology & therapeutics.

Increased risk of large-bowel cancer in Crohn's disease with colonic involvement

H. Adami, C. Helmick, A. Ekbom, 1990, The Lancet.