title: [Planned and active parenthood--2d and 3d stages of labor].
mesh_terms: D005260:Female; D006801:Humans; D007748:Labor Stage, Second; D007749:Labor Stage, Third; D007743:Labor, Obstetric; D009321:Natural Childbirth; D005082:Physical Exertion; D011247:Pregnancy
vernacular_title: Macierzyństwo świadome i aktywne--II i III okres porodu.