SHULMAN, LP, SIMPSON, JL, FELKER, RE
et al. (1992). TRANSVAGINAL CHORIONIC VILLUS SAMPLING USING TRANSABDOMINAL ULTRASOUND GUIDANCE
.
PRENATAL DIAGNOSIS, 12(3), 229-234. 10.1002/pd.1970120313
SHULMAN, LP, SIMPSON, JL, FELKER, RE et al. (1992). TRANSVAGINAL CHORIONIC VILLUS SAMPLING USING TRANSABDOMINAL ULTRASOUND GUIDANCE
. PRENATAL DIAGNOSIS, 12(3), 229-234. 10.1002/pd.1970120313