Focus session on the changing “epidemiology” of craniosynostosis (comparing two quinquennia: 1985-1989 and 2003-2007) and its impact on the daily clinical practice: a review from Necker Enfants Malades - Di Rocco, F; Arnaud, E; Meyer, P; Sainte-Rose, C; Renier, D (Childs Nerv Syst, 2009)