APA (7th ed.) Citation

Koopman, L., van der Heijden, G., Glasziou, P., Grobbee, D., & Rovers, M. (2007). A systematic review of analytical methods used to study subgroups in (individual patient data) meta-analyses.

Chicago Style (17th ed.) Citation

Koopman, L., G. van der Heijden, P. Glasziou, D. Grobbee, and M. Rovers. A Systematic Review of Analytical Methods Used to Study Subgroups in (individual Patient Data) Meta-analyses. 2007.

MLA (9th ed.) Citation

Koopman, L., et al. A Systematic Review of Analytical Methods Used to Study Subgroups in (individual Patient Data) Meta-analyses. 2007.