1. A. E. Athanasiou, R. E. Moyers, M. Mazaheri, and N. Toutountzakis .Frontal cephalometric evaluation of transverse dentofacial morphology and growth of children with isolated cleft palate., J Craniomaxillofac Surg, 1991 .19 :249 –253 .
2. S. E. Bishara, Cephalometric evaluation of facial growth in operated and non-operated individuals with isolated clefts of the palate., Cleft Palate J, 1973 .10 :239 –246 .
3. E. Dahl, Craniofacial morphology in congenital clefts of the lip and palate., Acta Odontol Scand, 1970 .28 :(suppl 57).1 –167 .
4. E. Dahl, S. Kreiborg, B. L. Jensen, and P. Fogh-Andersen .Comparison of craniofacial morphology in infants with incomplete cleft lip and infants with isolated cleft palate., Cleft Palate J, 1982 .19 :258 –266 .
5. F. C. Fraser, The multifactorial/threshold concept—uses and misuses., Teratology, 1976 .14 :267 –280 .