title: [Considerations on some aspects of ectopic pregnancy. Analysis of 50 cases operated. 1956].
authors.forename: José Luis
authors.initials: JL
authors.lastname: Pérez Salazar
mesh_terms: D005260:Female; D049673:History, 20th Century; D006801:Humans; D008800:Mexico; D009774:Obstetrics / Q000266:history*; D011247:Pregnancy; D011248:Pregnancy Complications; D011271:Pregnancy, Ectopic / Q000209:etiology / Q000266:history* / Q000601:surgery