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Open-Access Journal
Editorial
What is the purpose of launching World Journal of Rheumatology
Lian-Sheng Ma 
World J Rheumatol 1(1):1-3. Published online Dec 31, 2011. doi: 10.5499/wjr.v1.i1.1
Review
Synovial mesenchymal stem cells in vivo: Potential key players for joint regeneration 
Elena Jones, Dennis McGonagle 
World J Rheumatol 1(1):4-11. Published online Dec 31, 2011. doi: 10.5499/wjr.v1.i1.4