Length of a lippes loop.
D005260:Female; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects*; D010146:Pain / Q000209:etiology; D010423:Pentazocine / Q000008:administration & dosage; D014592:Uterine Hemorrhage / Q000209:etiology
D010423:Pentazocine