First occurrence of aprosencephaly/atelencephaly and holoprosencephaly in a family with a SIX3 gene mutation and phenotype/genotype correlation in our series of SIX3 mutations. Issue 1 (5th January 2005) - Pasquier, L; Dubourg, C; Gonzales, M; Lazaro, L; David, V; Odent, S; Encha-Razavi, F