Functional echocardiography training in the neonatal intensive care unit: comparing measurements and results with the pediatric cardiologist Marina Maccagnano Zamith; Simone de Araujo Negreiros Figueira; Allan Chiaratti de Oliveira; Cristiane Metolina; Junia Sampel de Castro; Cristina Nunes dos Santos; Ana Leticia de Oliveira Abrahão de Capo; Valdir Ambrósio Moisés;