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Journal article


Br Med J

Publication Date





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