[Tachometry in early pregnancy; development of the vagus nerve function].
D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D005865:Gestational Age; D006339:Heart Rate; D006801:Humans; D011247:Pregnancy; D014463:Ultrasonography; D014630:Vagus Nerve / Q000254:growth & development*
Tachometrie in de vroege zwangerschap; ontwikkeling van de nervus-vagusfunctie.