TY  - GEN
AU  - Schnapp,C
AU  - Alcalde,J L
AU  - Walton,R
AU  - Sáez,R
AU  - Concha,J
AU  - Ampuero,G
AU  - Parada,M
AU  - Guiloff,E
TI  - [Gestational age and real-time echography. I. Analysis of crown-rump length and parietal diameter in the first 2 trimesters of pregnancy]
SN  - 0048-766X
PY  - 1981///1221
KW  - Female
KW  - Fetus
KW  - anatomy & histology
KW  - Gestational Age
KW  - Humans
KW  - Pregnancy
KW  - Pregnancy Trimester, First
KW  - Pregnancy Trimester, Second
KW  - Ultrasonography
N1  - Publication Type: English Abstract; Journal Article
ER  -