Fetal nuchal translucence: a prospective analysis of this diagnostic procedure at the university hospital, FMRP-USP/Brasil - Resende, A. V.; Berezowski, Aderson Tadeu; Duarte, Geraldo; Dib, F. R.; Mendes, M. C.; Machado, J. C.; Cunha, Sérgio Pereira da (World Congress of Perinatal Medicine, 1999)