Correlation between PTPN11 gene mutations and congenital heart defects in Noonan and LEOPARD syndromes. Issue 9 (5th September 2003) - Sarkozy, A; Conti, E; Seripa, D; Digilio, M C; Grifone, N; Tandoi, C; Fazio, V M; Di Ciommo, V; Marino, B; Pizzuti, A; Dallapiccola, B