[Observations on normal fetal development of early pregnancy by ultrasonic b-scanning].
D004452:Echocardiography; D005314:Embryonic and Fetal Development; D005260:Female; D005318:Fetal Heart; D005865:Gestational Age; D006339:Heart Rate; D006801:Humans; D008722:Methods; D011247:Pregnancy; D014463:Ultrasonography; D014599:Uterus / Q000033:anatomy & histology
Alkuraskauden normaali sikiönkehitys b-ultraäänitutkimuksen valossa.