Study observation.general:Imp:Pt:^Fetus:Nar:US
study observation.general:imp:pt:^fetus:nar:us
Study observation.general:Impression/interpretation of study:To identify measures at a point in time:^Fetus:Narrative:Ultrasound
study observation.general:impression/interpretation of study:to identify measures at a point in time:^fetus:narrative:ultrasound