**Author details**

Kjell Hansson Mild1 \* and Ole Jacob Møllerløkken<sup>2</sup>

\*Address all correspondence to: kjell.hansson.mild@radfys.umu.se

1 Department of Radiation Sciences, Umeå University, Umeå, Sweden

2 Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
