Down's syndrome screening at 11-14 weeks' gestation using prenasal thickness and nasal bone length.
Gwendolin Manegold-BrauerRon MaymonShimrit ShorHoward CuckleUlrich GembruchAnnegret GeipelPublished in: Archives of gynecology and obstetrics (2019)
The PT/NBL ratio is a valuable first trimester DS screening marker that can be easily determined concomitant with the NT measurement.