title: Clinical bulletin no. 1--June 1996. Limited obstetrical ultrasound in the third trimester.
mesh_terms: D003479:Curriculum; D004521:Educational Measurement; D005260:Female; D017408:Guidelines as Topic; D006801:Humans; D009721:Nurse Midwives / Q000193:education*; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D016216:Ultrasonography, Prenatal / Q000379:methods / Q000451:nursing*