TY - GEN AU - Picker,R H AU - Saunders,D M TI - Ultrasound and the missing loop SN - 0004-8461 PY - 1977///0415 KW - Female KW - Humans KW - Intrauterine Devices KW - Pregnancy KW - Ultrasonography KW - Uterus N1 - Publication Type: Journal Article UR - https://doi.org/10.1111/j.1440-1673.1976.tb02009.x ER -