1. 1. Mossey PA, Castilla EE. Global registry and database on craniofacial anomalies. In: WHO registry meeting on craniofacial anomalies (2001: Bauru, Brazil) Geneva: WHO 2003:1-51.
2. 2. Skuta GL, Cantor LB, Weiss JS. Ocular development. In: Section 2 basic and clinical science course. USA: AAO 2008. P. 139.
3. 3. Cook CS, Sulik KK, Wright KW. Embryology. In: Wright KW, Spiegel PH, Thompson LS. Handbook of Pediatric NeuroOphthalmology. 2nd edn. USA: Springer Science+Business Media 2006. P. 34.
4. 4. Cohen MM, Kreiborg S. Birth prevalence studies of the Crouzon syndrome-comparison of direct and indirect methods. Clin Genet 1992;41(1)12-5.
5. A study of possible deleterious effects of consanguinity;Abdulrazzaq;Clin Genet,1997