- Correspondence to Professor Roberto Gerli, Rheumatology Unit, Department of Medicine and Surgery, University of Perugia, Perugia, Italy;
- Received January 9, 2021
- Accepted January 12, 2021
- First published January 28, 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.