1. Pregnancy in sickle cell disease in the UK;Tuck, S.M.; Studd, J.W.W.;BrJ Obstet Gynaecol,1983
2. Contraceptives in sickle cell disease;Foster, H.W.;South MedJ,1981
3. Sickle cells and hormonal contraception;Evans, D.I.K.;British Journal of Family Planning,1984
4. Hemoglobinopathies and pregnancy;Morrison, J.C.;CGin Obstet Gynecol,1979
5. Handbook of family planning;Louden, N.,1991