1. Sauebrei EE. Early pregnancy: pre-embrionic and embrionic periods. In: Sauebrei EE, Nguyen KT, Nolan RL, editors. A practical guide to ultrasound in obstetrics and gynecology. Philadelphia (PA): Lippincott-Raven Publishers. 1998; 122–31.
2. Pedersen JF, Mantoni M. Prevalence and significance of subchorionic hemorrhage in threatened abortion: a sonographic study. AJR Am J Roentgenol 1990; 154: 535–7.
3. Bennett GL, Bromley B, Lieberman E, Benaceraf BR. Subchorionic hemorrhage in the first-trimester pregnancies: prediction of pregnancy outcome with sonography. Radiology 1996; 200: 803–6.
4. Coulam CB. Understanding the immunobiology of pregnancy and applying it to treatment of recurrent pregnancy loss. Early Pregnancy 2000; 4: 19–29.
5. Choi BC, Polgar K, Xiao L, Hill JA. Progesterone inhibits in vitro embryotoxic Th1 cytokine production to trophoblast in women with recurrent pregnancy loss. Hum Reprod 2000; 15 (Suppl. 1): 46–59.
6. Pelinescu-Onciul D, Radulescu-Botica R, Steriu M et al. Terapia cu progesteron micronizat a hematoamelor eciduale. Infomedica 1999; 2S: 32–5.
7. El Zibdeh MY. Randomized clinical trial comparing the efficacy of dydrogesterone, hCG or no treatment in the reduction of spontaneous abortion. Gynecol Endocrinol 2001; 15: 44–8.
8. Aksoy S, Celikkarat H, Seuoz S, Gokmen P. The prognostic value of serum estradiol, progesterone, testosterone and free testosterone levels in detecting early abortions. Eur J Obstet Gynecol Reprod Biol 1996; 67: 5–8.
9. Pelinescu-Onciul D, Radulescu-Botica R. Utilizarea didrogesteronului ?n tratamentul sarcinilor de prim trimestru cu hematom decidual. Congresul National al Societatii Romane de Ginecologie Endocrinologica held in Craiova, Romania; 2003; 17–20.
10. Rozenbaum H. Comment choisir un progestatif? Reproduction Humaine et Hormones 2000; 13: 3–16.
11. Szekeres-Bartho J, Wegmann TG. A progesterone dependent immunomodulatory proteins alters the Th1/Th2 balance. J Reprod Immunol 1996; 31: 81–95.
12. Kalinka J, Szekeres-Bartho J. The impact of dydrogesterone supplementation on hormonal profile and progesteroneinduced blocking factor concentrations in women with threatened abortions. Am J Reprod Immunol 2005; 53: 1–6.
________________________________________________
1. Sauebrei EE. Early pregnancy: pre-embrionic and embrionic periods. In: Sauebrei EE, Nguyen KT, Nolan RL, editors. A practical guide to ultrasound in obstetrics and gynecology. Philadelphia (PA): Lippincott-Raven Publishers. 1998; 122–31.
2. Pedersen JF, Mantoni M. Prevalence and significance of subchorionic hemorrhage in threatened abortion: a sonographic study. AJR Am J Roentgenol 1990; 154: 535–7.
3. Bennett GL, Bromley B, Lieberman E, Benaceraf BR. Subchorionic hemorrhage in the first-trimester pregnancies: prediction of pregnancy outcome with sonography. Radiology 1996; 200: 803–6.
4. Coulam CB. Understanding the immunobiology of pregnancy and applying it to treatment of recurrent pregnancy loss. Early Pregnancy 2000; 4: 19–29.
5. Choi BC, Polgar K, Xiao L, Hill JA. Progesterone inhibits in vitro embryotoxic Th1 cytokine production to trophoblast in women with recurrent pregnancy loss. Hum Reprod 2000; 15 (Suppl. 1): 46–59.
6. Pelinescu-Onciul D, Radulescu-Botica R, Steriu M et al. Terapia cu progesteron micronizat a hematoamelor eciduale. Infomedica 1999; 2S: 32–5.
7. El Zibdeh MY. Randomized clinical trial comparing the efficacy of dydrogesterone, hCG or no treatment in the reduction of spontaneous abortion. Gynecol Endocrinol 2001; 15: 44–8.
8. Aksoy S, Celikkarat H, Seuoz S, Gokmen P. The prognostic value of serum estradiol, progesterone, testosterone and free testosterone levels in detecting early abortions. Eur J Obstet Gynecol Reprod Biol 1996; 67: 5–8.
9. Pelinescu-Onciul D, Radulescu-Botica R. Utilizarea didrogesteronului ?n tratamentul sarcinilor de prim trimestru cu hematom decidual. Congresul National al Societatii Romane de Ginecologie Endocrinologica held in Craiova, Romania; 2003; 17–20.
10. Rozenbaum H. Comment choisir un progestatif? Reproduction Humaine et Hormones 2000; 13: 3–16.
11. Szekeres-Bartho J, Wegmann TG. A progesterone dependent immunomodulatory proteins alters the Th1/Th2 balance. J Reprod Immunol 1996; 31: 81–95.
12. Kalinka J, Szekeres-Bartho J. The impact of dydrogesterone supplementation on hormonal profile and progesteroneinduced blocking factor concentrations in women with threatened abortions. Am J Reprod Immunol 2005; 53: 1–6.