1. Sulik KK (1996) Caniofacial development. In: Turvey TA, Vig KWL (eds) Facial clefts and craniosynostosis and principles and management. WB Saunders Company, Philadelphia, pp 3–27
2. Nema HV, Singh VP, Nema N (2002) Congenital anomalies of eye and adnexa. In: Agarwal S, Agarwal A (eds) Text book of ophthalmology; retina and vitreous in systemic diseases, 1st edn. Jaypee Brothers, New Delhi, pp 2939–2964
3. Tassabehji M, Read AP, Newton VE, Harris R, Balling R, Gruss P, Strachan T (1992) Waardenburg’s syndrome patients have mutations in the human homologue of the Pax-3 paired box gene. Nature 355(6361):635–636
4. Poswillo D (1968) The aetiology and surgery of cleft palate with micrognathia. Ann R Coll Surg Engl 43(2):61–88
5. Leck I, Hay S, Witte JJ, Greene JC (1969) Malformations recorded on birth certificates following A2 influenza epidemics. Public Health Rep 84(11):971–979