The new obstetric ultrasound guidelines: some concerns.
Schreckengost
Joshua L
JL
Filly
Roy A
RA
D006801:Humans; D009774:Obstetrics / Q000592:standards / Q000639:trends; D017410:Practice Guidelines as Topic; D010818:Practice Patterns, Physicians' / Q000592:standards / Q000639:trends; D016216:Ultrasonography, Prenatal / Q000592:standards / Q000639:trends; D014481:United States