title: [Echography in the first 3 months of pregnancy. Study of 100 cases].
mesh_terms: D000033:Abortion, Threatened / Q000175:diagnosis; D005260:Female; D005318:Fetal Heart / Q000502:physiology; D005333:Fetus / Q000033:anatomy & histology; D006801:Humans; D010929:Placentation; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D014463:Ultrasonography
vernacular_title: L'ecografia nei primi tre mesi di gravidanza. Studio su 100 casi.