Figure 3.

Risk ratio for preterm delivery from 4 studies of women with preexisting diabetes mellitus who did or did not receive preconception care. PCC= Preconception care; NPCC= No preconception care; CI= Confidence intervals.

Wahabi et al. BMC Pregnancy and Childbirth 2010 10:63   doi:10.1186/1471-2393-10-63
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