- Correspondence to Carolina Rau Steuernagel, Department of Community Medicine and Global Health, University of Oslo, Oslo 0315, Norway;
- Received June 26, 2018
- Revised January 8, 2019
- Accepted January 10, 2019
- First published October 13, 2019.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.