TY - GEN AU - Khawli,O F AU - Rothschild,B M TI - Use of ultrasound in obstetrics SN - 0098-8243 PY - 1993///1203 KW - Female KW - Fetal Diseases KW - diagnostic imaging KW - Forecasting KW - Humans KW - Pregnancy KW - Pregnancy Trimester, First KW - Pregnancy Trimester, Second KW - Pregnancy Trimester, Third KW - Ultrasonography, Prenatal KW - trends N1 - Publication Type: Journal Article; Review ER -