- Correspondence to Dr Robert Janknegt, Zuyderland Medical Centre Sittard-Geleen, 6130 MB Sittard-Geleen, The Netherlands;
- Received January 28, 2020
- Revised June 17, 2020
- Accepted June 30, 2020
- First published September 12, 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.