Normal early pregnancy: serum hCG levels and vaginal ultrasonography findings.
Perks
N F
NF
Sherriff
E A
EA
Winston
R M
RM
D005260:Female; D005307:Fertilization in Vitro; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D016216:Ultrasonography, Prenatal