L. Lopes

Study of nuchal translucency , ductus venosus , nasal bone and maternal age for detection of fetal chromosomal disorders in a high-risk population *

Alessandro, M. Toralles, A. Moron, 2008 .

Perinatal outcomes of a large cohort of extremely low gestational age infants (twenty-three to twenty-eight completed weeks of gestation).

M. Whitfield, A. Synnes, E. Ling, 1994, The Journal of pediatrics.