#breech_delivery__breech_birth__breech_presentation  delivery of an infant whose feet or buttocks appear first
  supertype:  #obstetrical_delivery__obstetricaldelivery__delivery  the act of delivering a child
  subtype:  #frank_breech_delivery__frank_breech__frankbreech  position of a fetus in which the buttocks are present at the maternal pelvic outlet

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