"Incidence" and "Prevalence" as Measures of the Frequency of Congenital Malformations and Genetic Outcomes: Application to Oral Clefts (Invited Article) Authors Ernest B. Hook Keywords: incidence, prevalence, congenital malformations, genetics,, stillbirth, miscarriage, abortion, embryo, fetus,, cleft palate, cleft lip Downloads PDF Published 1988-04-01 Issue Vol. 25 No. 2 (1988): April 1988 Section Articles