Many reviewers have contributed their expertise and time to the peer review,a critical process to ensure the quality of World Journal of Rheumatology.The editors and authors of the articles submitted to the journal are grateful to the following reviewers for evaluating the articles(including those published in this issue and those rejected for this issue)during the last editing time period.Javier Alberto Cavallasca,MD,Staff Physician,Section of Rheumatology and Autoimmune Diseases,Hospital JB Iturraspe,Santa Fe,Argentina,Boulevard Pellegrini 3551,CP 3000,Santa Fe,Argentina Jrg HW Distler,MD,Department of Internal Medicine 3,University of Erlangen-Nuremberg,Universittsstr,29,91054 Erlangen,Germany Many reviewers have contributed their expertise and time to the peer review, a critical process to ensure the quality of World Journal of Rheumatology. Editors and authors of the articles submitted to the journal are grateful to the following reviewers for evaluating the articles (including those published in this issue and those rejected for this issue) during the last editing time period. Javier Alberto Cavallasca, MD, Staff Physician, Section of Rheumatology and Autoimmune Diseases, Hospital JB Iturraspe, Santa Fe, Argentina, Boulevard Pellegrini 3551, CP 3000, Santa Fe, Argentina Jörg HW Distler, MD, Department of Internal Medicine 3, University of Erlangen-Nuremberg, Universitätsstr, 29, 91054 Erlangen, Germany