field block (regional anesthesia, regional block, nerve block, conduction anesthesia)
first trimester ultrasound (pregnancy ultrasound, transvaginal ultrasound, also known as TVUS, obstetrical ultrasound, pelvic ultrasonography in pregnancy, obstetric sonogram, obstetric ultrasonography)
fishhook removal (pregnancy ultrasound, transvaginal ultrasound, also known as TVUS, obstetrical ultrasound, pelvic ultrasonography in pregnancy, obstetric sonogram, obstetric ultrasonography)