A long-term follow-up study of women using different methods of contraception--an interim report.

Abortion, Spontaneous/etiology Adult Contraception/methods Contraceptive Devices, Female/adverse effects Contraceptives, Oral, Synthetic/adverse effects,pharmacology Disease/etiology England Female Fertility Fetal Death/etiology Follow-Up Studies Humans Intrauterine Devices/adverse effects Male Mortality Patient Acceptance of Health Care Pregnancy Pregnancy, Ectopic/etiology Pregnancy, Multiple Prospective Studies Sex Ratio

Contraceptives, Oral, Synthetic