| Literature DB >> 3042019 |
Abstract
Entities:
Keywords: Biology; Case Studies; Contraception; Contraception Failure; Contraceptive Methods; Contraceptive Usage; Demographic Factors; Developed Countries; Diseases; Endoscopy; England; Europe; Examinations And Diagnoses; Family Planning; Fertility; Gastrointestinal Effects; Iud; Iud, Copper Releasing; Laparoscopy; Northern Europe; Perforations; Physical Examinations And Diagnoses; Physiology; Population; Population Dynamics; Pregnancy; Pregnancy, Unwanted; Reproduction; Reproductive Behavior; Research Methodology; Studies; Ultrasonics; United Kingdom
Mesh:
Year: 1988 PMID: 3042019 DOI: 10.1111/j.1471-0528.1988.tb12813.x
Source DB: PubMed Journal: Br J Obstet Gynaecol ISSN: 0306-5456