1. The increasing concern with infertility;Aral, S.O.; Cates, W.;JAMA,1983
2. Primary tubal infertility in relation to the use of an intrauterine device;Daling, JR, Weiss; NS, Metch; B.J.,1985
3. Tubal infertility and the intrauterine device;Cramer, D.W.; Schiff, I.; Schoenbaum, S.C.;New Engl J Med,1985
4. The association between smoking and female infertility as influenced by cause ofthe infertility;Phipps, W.R.; Cramer, D.W.; Schiff, I.;Fertility and Sterility,1987
5. The relationship of tubal infertility to barrier method and oral contraceptive use;Cramer, D.W.; Goldman, M.B.; Schiff, I.;JAMA,1987