Metopic and sagittal synostosis in Greig cephalopolysyndactyly syndrome: five cases with intragenic mutations or complete deletions of GLI3. by Hurst, J, Jenkins, D, Vasudevan, P, Kirchhoff, M, Skovby, F, Rieubland, C, Gallati, S, Rittinger, O, Kroisel, P, Johnson, D, Biesecker, L, Wilkie, A