- Correspondence to Anna Severin, University of Bern Institute of Social and Preventive Medicine, 3012 Bern, Switzerland;
- Accepted October 31, 2020
- First published November 16, 2020.
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.