- Correspondence to Dr Carl Tollef Solberg, Department of Global Public Health and Primary Care, Global Health Priorities, University of Bergen, Postboks 7804, Bergen N-5020, Norway;
- Received May 9, 2017
- Revised July 28, 2017
- Accepted September 24, 2017
- First published October 27, 2017.
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.