title: [Evaluation of the activity of fetal heart in the 1st trimester of pregnancy].
mesh_terms: D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D005323:Fetal Monitoring / Q000379:methods*; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First
vernacular_title: Ocena czynności serca płodu w I trymestrze clazy.