Statistics from Altmetric.com
Funding This work was supported by Grant-in-Aid for Scientific Research (B) from Japan Society for the Promotion of Science (JSPS), Health and Labour Science Research Grants from the Ministry of Health, Labour and Welfare of Japan, Japan Rheumatism Foundation, The Naito Foundation and Mitsubishi Pharma Research Foundation.
Competing interests None.
Ethics approval This study was conducted with the approval of the University of Tsukuba, Juntendo University and the University of Tokyo.
Provenance and peer review Not commissioned; externally peer reviewed.
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.