Cardiac findings in 31 patients with noonan's syndrome - Bertola, Debora Romeu; Chong, Ae Kim; Sugayama, Sofia Mizuho Miura; Albano, Lilian Maria José; Wagenfuhr, Jaqueline; Moyses, Regina Lucia; Gonzalez, Claudette Hajaj (Arquivos Brasileiros de Cardiologia, 2000)