1. Bergé, S. J., Plath, H., Van de Vondel, P. T., et al. (2001). Fetal cleft lip and palate: Sonographic diagnosis, chromosomal abnormalities, associated anomalies and postnatal outcome in 70 fetuses. Ultrasound in Obstetrics & Gynecology, 18, 422–431.
2. Bonaiti-Pellie, C., Smith, C. (1974). Risk tables for genetic counselling in some common congenital malformations. Journal of Medical Genetics, 11, 374–377.
3. Bonaiti-Pellié, C., Briand, M. L., Feingold, J., et al. (1982). An epidemiological and genetic study of facial clefting in France. I. Epidemiological and frequency in relatives. Journal of Medical Genetics, 11, 374–377.
4. Burdi, A. R. (1977). Epidemiology, etiology, and pathogenesis of cleft lip and palate. The Cleft Palate Journal, 14(14), 262–269.
5. Carinci, F., Pezzetti, F., Scapoli, L., et al. (2000). Genetics of nonsyndromic cleft lip and palate: A review of international studies and data regarding the Italian population. The Cleft Palate-Craniofacial Journal, 37, 33–40.