title: SOGC clinical practice guidelines: ultrasound evaluation of first trimester pregnancy complications.
authors.affiliation: Professor of Obstetrics, Gynecology and Reproductive Sciences, Director of Gynecologic Specialties, Director of Family Planning, University of Pittsburgh School of Medicine; Professor of Epidemiology, University of Pittsburgh Graduate School of Public Health.
authors.forename: Mitchell
authors.initials: M
authors.lastname: Creinin
mesh_terms: D047108:Embryonic Development; D005260:Female; D006801:Humans; D017410:Practice Guidelines as Topic / Q000592:standards*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000000981:diagnostic imaging*; D011261:Pregnancy Trimester, First; D016216:Ultrasonography, Prenatal / Q000592:standards*