2Marshall KW.Viscosupplementation for osteoarthritis: current status, unresolved issues, and future directions.J Rheumatol 1998;25(11):2056-8.
3Recommendations for the medical management of oateoarthritis of the hip and knee: 2000 update. American College of Rheumatology Subcommittee on Osteoarthritis Guidelines.Arthritis Rheum 2000;43(9):1905-15.
4Brandt KD.Should osteoarthritis be treated with nonsteroidal anti-inflammatory drugs?Rheum Dis Clin North Am 1993;19(3):697-712.