Perimeter:Prctl:Pt:Abdomen^Fetus:Qn:Per estimated gestational age
perimeter:prctl:pt:abdomen^fetus:qn:per estimated gestational age
Perimeter:Percentile:To identify measures at a point in time:Abdomen^Fetus:Quantitative:Per estimated gestational age
perimeter:percentile:to identify measures at a point in time:abdomen^fetus:quantitative:per estimated gestational age