Corresponding Author

Jo S Stenehjem

Department of Research, Cancer Registry of Norway, Oslo, Norway

Oslo Centre for Biostatistics and Epidemiology, Department of Biostatistics, University of Oslo, Oslo, Norway

Correspondence

Jo S. Stenehjem, PhD, Department of Research, Cancer Registry of Norway - Institute of Population-based Cancer Research, P.O. box 5313 Majorstuen, NO-0304 Oslo, Norway

E-mail: jo.stenehjem@kreftregisteret.no