Chinese Journal of Rheumatology, Volume 15, Issue 10,2011, Pages 671-676, doi:10.3760/cma.j.issn.1007-7480.2011.10.004
Chinese Journal of Rheumatology, Volume 15, Issue 10,2011, Pages 725-727, doi:10.3760/cma.j.issn.1007-7480.2011.10.019
Chinese Journal of Rheumatology, Volume 15, Issue 10,2011, Pages 713-716, doi:10.3760/cma.j.issn.1007-7480.2011.10.014