Available online http://arthritis-research.com/content/10/1/R17 ResearchVol 10 No 1 article Open Access Rheumatic Diseases in China Qing Yu Zeng1, Ren Chen2, John Darmawan3, Zheng Yu Xiao1, Su Biao Chen1, Richard Wigley4, Shun Le Chen5 and Nai Zheng Zhang6 1Department of Rheumatology, the 1st Affiliated Hospital, Shantou University Medical College, 22 Xinling Road, Shantou, 515041 Guangdong, China 2Chenghai Municipal Hospital, Huancheng Bei Road, Chenghai District, Shantou, 515800 Guangdong, China 3World Health Organization Collaborating Center, Community-based Epidemiology, Treatment, and Prevention of Rheumatic Disease, Indonesian Rheumatic Center, 7 Jalan Seroja Dalam, Jakarta-Semarang, 50136 Indonesia 4World Health Organization Collaborating Center, Epidemiology of Rheumatic Disease, Research Laboratory, Palmerston North Hospital, 240 Park Road, Palmerston North, New Zealand 5Department of Rheumatology, Renji Hospital, Medical Science of Shanghai Jiaotong University, 145 Shandong Middle Road, Shanghai, 200001 China 6Department of Rheumatology, Peking Union Medical College Hospital, 1 Shuaifuyuan, Beijing, 100730 China Corresponding author: Qing Yu Zeng,
[email protected] Received: 16 May 2007 Revisions Requested: 21 Jun 2007 Revisions received: 6 Nov 2007 Accepted: 31 Jan 2008 Published: 31 Jan 2008 Arthritis Research & Therapy 2008, 10:R17 (doi:10.1186/ar2368) This article is online at: http://arthritis-research.com/content/10/1/R17 © 2008 Zeng et al.; licensee BioMed Central Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Introduction Epidemiological studies of rheumatic diseases was 0.02%; undifferentiated spondyloarthropathy was identified have been conducted during the past 20 years in China.