title: [Real-time ultraechosonography in the pathology of the 1st half of pregnancy].
mesh_terms: D000293:Adolescent; D000328:Adult; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis*; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D014463:Ultrasonography
vernacular_title: Ultraecosonografía de tiempo real en la patología de la primera mitad del embarazo.