DeLee and Charnley, and Gruen zones
Evans' index
Ductus venosus flow waveform
Acromion index
FDI (Fédération Dentaire Internationale) - World Dental Federation nomenclature for OPG reporting of adult dentition
Variation in cord insertion
Lateral acromial angle
Acromiohumeral interval
Variation in placental adherence: diagrams
Variation in placental morphology: diagrams
Variation in fetal heart rate through gestation
Squamo-columnar junction - cervix
Placenta previa spectrum
Kohler line
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