1. Intrauterine devices and infertility: sifting through the evidence;Grimes;Lancet,2001
2. Return of fertility in nulliparous women after discontinuation of the intrauterine device: comparison with women discontinuing other methods of contraception;Doll;Br J Obstet Gynaecol,2001
3. IUDs and pelvic inflammatory disease;Farley;Lancet,1992
4. Significance of cervical Chlamydia trachomatis infection in postabortal pelvic inflammatory disease;Westergaard;Obstet Gynecol,1982