APA (7th ed.) Citation

Keystone, E. C. (2008). Is a step-down regimen more effective than a step-up regimen in the treatment of early rheumatoid arthritis? Nature Clinical Practice Rheumatology, 4(8), 396. https://doi.org/10.1038/ncprheum0861

Chicago Style (17th ed.) Citation

Keystone, E. C. "Is a Step-down Regimen More Effective than a Step-up Regimen in the Treatment of Early Rheumatoid Arthritis?" Nature Clinical Practice Rheumatology 4, no. 8 (2008): 396. https://doi.org/10.1038/ncprheum0861.

MLA (9th ed.) Citation

Keystone, E. C. "Is a Step-down Regimen More Effective than a Step-up Regimen in the Treatment of Early Rheumatoid Arthritis?" Nature Clinical Practice Rheumatology, vol. 4, no. 8, 2008, p. 396, https://doi.org/10.1038/ncprheum0861.