title: [Study of current phenomena in childbirth].
mesh_terms: D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007316:Insemination, Artificial, Heterologous; D007564:Japan; D007743:Labor, Obstetric; D008297:Male; D009321:Natural Childbirth; D009774:Obstetrics / Q000639:trends*; D011247:Pregnancy