1. ICBDSR, WHOICDCI. Birth defects surveillance a manual for programme managers. Geneva: World Health Organization; 2014.
2. Corsello G, Giuffrè M. Congenital malformations and syndromes: early diagnosis and prognosis. In: Neonatology. Milan: Springer; 2012. p. 31–45.
3. Cornel MC. Registration and prevention of congenital anomalies. Brussels: EUROCAT; 1993.
4. Graham JM, Sanchez-Lara PA. Smith’s recognizable patterns of human deformation. Amsterdam: Elsevier Health Sciences; 2015.
5. Dyken P, Miller MD. Facial features of neurologic syndromes. St Louis: Mosby Inc.; 1980.