Type

Journal article

Journal

Br Med J

Publication Date

12/07/1980

Volume

281

Keywords

Acceptor Characteristics, Age Factors, Contraception, Contraceptive Methods, Correlation Studies, Demographic Factors, Diseases, Family Planning, Fertility, Fertility Measurements, Infections, Iud, Iud, Copper Releasing, Nulliparity, Parity, Pelvic Infections, Population, Population Characteristics, Population Dynamics, Research Methodology, Statistical Studies, Studies, Adolescent, Adult, Age Factors, Female, Humans, Intrauterine Devices, Copper, Middle Aged, Parity, Pelvic Inflammatory Disease