title: Hormonal effects of ultrasound.
authors.forename: I L
authors.initials: IL
authors.lastname: Bromberg
authors.forename: N
authors.initials: N
authors.lastname: Zielinski
authors.forename: R
authors.initials: R
authors.lastname: Dassin
authors.forename: S
authors.initials: S
authors.lastname: Fisher
mesh_terms: D006063:Chorionic Gonadotropin / Q000097:blood*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D013997:Time Factors; D014463:Ultrasonography
chemical_list: D006063:Chorionic Gonadotropin