 (2005) found that the prevalence rate of clefting among a group of Sudanese hospital new-borns in the city of Khartoum is 0.9 per 1,000 live births.Mestizo Americans are people of mixed European and Native American origins from Mexico, Central America and South America, and the Caribbean (Meyerson, 1990).The prevalence of Mestizo Americans is lower than that of Caucasians and Native Americans, yet it is still higher than African Americans (Croen et al., 1998).