Variability of expression of oral-facial-digital syndrome type I in 15 Saudi girls: Why is there a high rate of median cleft lip in the phenotype?
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Background: It is well known that the incidence of nonsyndromal cleft lip and palate varies greatly according to ancestry: 0.3 to 0.4 per 1000 live births in blacks, one in 1000 in Caucasians, and two in 1000 in Asians and indivi... ...
