Figure 1. Measurement of the fetal nasal bone length

From

Fetal Nasal Bone Length in the Period of 11 and 15 Weeks of Pregnancy in the Filipino Population

Leodoro J. Labrague, Lynette C. Tan

American Journal of Medical Sciences and Medicine. 2013, 1(6), 110-113 doi:10.12691/ajmsm-1-6-3