- Correspondence to Dr David A Fried, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI 48105, USA;
- Received December 30, 2020
- Accepted December 30, 2020
- First published January 6, 2021.
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.