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  1. Everett C. Incidence and outcome of bleeding before the 20th week of pregnancy: prospective study from general practice. BMJ 1997;315:32-4.
  2. Donati S, Baglio G, Spinelli A, Grandolfo ME. Drug use in pregnancy among Italian women. Eur J Clin Pharmacol 2000;56:323-8.
  3. Gilmore DH, McNay MB. Spontaneous fetal loss rate in early pregnancy. Lancet 1985;1(8420):107.
  4. Brigham SA, Conlon C, Farquharson RG. A longitudinal study of pregnancy outcome following idiopathic recurrent miscarriage. Hum Reprod 1999;14:2868-71.
  5. Brown DL, Emerson DS, Felker RE, Cartier MS, Smith WC. Diagnosis of early embryonic demise by endovaginal sonography. J Ultrasound Med 1990;9:631-6.
  6. Anderson SG. Management of threatened abortion with real-time sonography. Obstet Gynecol 1980;55:259-262.
  7. Camejo MI, Proverbio F, Febres F, Casart YC. Bioactive to immunoreactive ratio of circulating human chorionic gonadotropin as possible evaluation for the prognosis of threatened abortion. Eur J Obstet Gynecol Reprod Biol 2003;109:181-4.
  8. Stovall TG, Ling FW, Carson SA, Buster JE. Serum progesterone and uterine curettage in differential diagnosis of ectopic pregnancy. Fertil Steril 1992;57:456-7.
  9. Stovall TG, Ling FW, Andersen RN, Buster JE. Improved sensitivity and specificity of a single measurement of serum progesterone over serial quantitative beta-human chorionic gonadotrophin in screening for ectopic pregnancy. Hum Reprod 1992;7:723-5.
  10. Chamberlain G. Vaginal bleeding in early pregnancy-I. BMJ 1991;302:1141-3
  11. Moller K, Fuchs F. Double blind controlled trial of 6-methyl-17-acetoxyprogesterone in threatened abortion. J Obstet Gynaecol Br Common 1965;72:1042-4.
  12. Tognoni G, Ferrario L, Inzalaco M, Crosignani P. Progestogens in threatened abortion. Lancet 1980;2:1242-3.
  13. Berle P, Budenz M, Michaelis J. Is hormonal therapy still justified in imminent abortion? Zeitschr Geburtsh Perinatol 1980;184:353-8.
  14. Gerhard I, Gwinner B, Eggert-Kruse W, Runnebaum B. Double-blind controlled trial of progesterone substitution in threatened abortion. Biol Res Pregn Perinat 1987;8:26-34.
  15. Bulletti C, De Ziegler D, Maini M, Del Ferro E, Polli V, Flamigni C. Effects of the vaginal progesterone gel crinone 8% on uterine cramps and bleeding associated with threatened abortion. Fertil Steril 2001;76 (Suppl. 1):S184-5.
  16. Soltan MH. Buphenine and threatened abortion. Eur J Obstet Gynecol Reprod Biol 1986;22:319-24.
  17. Strom C, Ginsberg N, Applebaum M, Bozorgi N, White M, Caffarelli M, Velinsky Y. Analyses of 95 first trimester spontaneous abortions by chorionic villus sampling and karyotype. J Assist Reprod Genet1992;9:458-461.
  18. American College of Obstetrics and Gynecology. Practice bulletin: prevention of Rh D alloimmunization: number 4, May 1999. Clinical management guidelines for obstetrician-gynecologists. Int J Gynaecol Obstet 1999;66:63-70.
  19. Royal College of Obstetricians and Gynaecologists. Use of anti-D immunoglobulin for Rh prophylaxis. London: RCOG, 2002. (Number 22.)