• American College of Rheumatology

• Bone and Joint Decade

• Blackwell Publication

• FDA-USA

• Internet Medicine

• Medical Council of Iran

• MedScapes

• NIH-USA

• Online archives of Rheumatology

• PDR (Physician's desk reference)

• Peer Review Institute

• Peer View Add watch

• PubMed

• Rheuma21st

• MedScapes

• Rheumatology Linx

• Tehran University for Medical Sciences

• Thomson ISI