1. Risk of gestational diabetes mellitus in women with polycystic ovary syndrome: a systematic review and a meta-analysis 
Konstantinos A. Toulis, M.D., M.Sc., Dimitrios G. Goulis, M.D., Ph.D., Efstratios M. Kolibianakis, M.D., Ph.D., Christos A. Venetis, M.D., M.Sc., Basil C. Tarlatzis, M.D., Ph.D., Ioannis Papadimas, M.D., Ph.D. 
Fertility and Sterility 
Volume 92, Issue 2, Pages (August 2009)
DOI: /j.fertnstert
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1 Flow chart for the systematic review and the meta-analysis.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2 Forest plot of GDM ORs (random-effects model).
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions

4. Figure 3
Subgroup analysis on study design. (A) Cohort vs. case-control studies. (B) Retrospective versus prospective studies.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions