title: [Childbirth in the United States and recent developments in Japan].
authors.forename: M
authors.initials: M
authors.lastname: Amamiya
mesh_terms: D002568:Certification; D005260:Female; D006801:Humans; D007564:Japan; D009721:Nurse Midwives / Q000639:trends*; D009774:Obstetrics / Q000639:trends*; D011247:Pregnancy; D014481:United States