The impact of temporal variability of biochemical markers PAPP-A and free β-hCG on the specificity of the first-trimester Down syndrome screening: a Croatian retrospective study

por Tišlarić-Medenjak, Dubravka, Zec, Ivana, Šimundić, Ana-Maria, Sabolović-Rudman, Senka, Kos, Milan, Megla, Željka Bukovec
Publicado 2010