- Correspondence to Dr Shu Man Fu, Division of Rheumatology, Department of Medicine, University of Virginia, Virginia, Charlottesville, USA;
- Received July 17, 2018
- Revised August 14, 2018
- Accepted August 19, 2018
- First published September 25, 2018.
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.