1. Dandy WE, Blackfan KD. Internal hydrocephalus: an experimental, clinical and pathological study. Am J Dis Child 1914; 8:406–482.
2. Johnston MV, Kinsman S. Congenital anomalies of the central nervous system. In Behrman RE, Kliegman RM, Jenson HB, eds. Nelson Textbook of Pediatrics. Philadelphia, Saunders, 2004; 1983–1993.
3. Kohyama J, Watanabe S, Iwakawa Y, Fukuda C. A case of Dandy-Walker malformation: consideration on the teratogenic period and sleep structures. Brain Dev 1988, 10: 392–396.
4. Brown DM, Marsh JL. Agnathia and associated malformations: a case report. Cleft Palate J 1990; 27:415–418.
5. Hsieh CC, Hsu JJ, Lo LM, Hsieh TT, Soong YK. Non-mosaic trisomy 20 in cultures of amniotic fluid from a fetus with serious congenitale malformation. J Formos Med Assoc 1992; 91:543–544.