title: [New guidance on labor analgesia. 1955].
authors.forename: Carlos
authors.initials: C
authors.lastname: Colmeiro-Laforet
mesh_terms: D016362:Analgesia, Obstetrical / Q000266:history* / Q000379:methods; D005260:Female; D049673:History, 20th Century; D006801:Humans; D011247:Pregnancy; D013030:Spain