Comment and reply on: prediction of the date of delivery based on first trimester ultrasound measurements: an independent method from estimated date of conception.
Gjessing
Håkon K
HK
Grøttum
Per
P
Okland
Inger
I
Eik-Nes
Sturla H
SH
D005260:Female; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D016216:Ultrasonography, Prenatal