[Midwifery technics practiced by Ainu (5): Prevention of urethral prolapse and safe delivery].
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D005006:Ethnicity; D005260:Female; D049673:History, 20th Century; D006801:Humans; D007564:Japan; D008880:Midwifery / Q000379:methods*; D007744:Obstetric Labor Complications / Q000517:prevention & control; D011247:Pregnancy; D011391:Prolapse / Q000517:prevention & control; D014522:Urethral Diseases / Q000517:prevention & control