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PICO
Question: Has the frequency of antenatal diagnosis of facial clefting increased since the early 1990s?
Question type: Descriptive
Study design: Retrospective cohort study
Researchers from Dalhousie University, Nova Scotia, Canada performed a retrospective analysis to answer the question of whether antenatal diagnosis of facial clefting is more common now than it was in the 1990s when it was first reported.1
Taking advantage of several regional data bases, the group conducted a population-based study assessing the prevalence of cleft lip, cleft palate, and …
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