1[1]dickey RP, Olar TT, Curole DN, et al. Relationship of firsttrimester subchorionic bleeding detected by colro Doppler Ultrasound to subch orionic fluid,clinical bleeding, and pregnancy outcome. Obstet Gynecol 1992; 80:415～ 420.
2[2]Stabile I, Compbell S, Grudzinskas JG. Threatened miscarriage and intrauterine he matomas: Sonographic and biochemical studies. J Ultrasound Med 1989; 8:289～29
3[3]Jouppila P. Clinical consequences after Ultrasonic diagnosis of intrauterine hematoma in threatened abortion. JCU 1985; 13:107～111.
4[4]Pedersen JF, Mantoni M. Prevalence and signifi cance of subchorionic hemorrhage in threatened abortion: a sonographic study. AJR 1990; 154:353～ 357
6[6]Mantoni M. Ultrasound signs in threatened abortion and their prognostic significance. Obstet Gynecol 1985; 65:471～475.
7[7]Mandruzzato GP. D' ottavio G, Ruatico MA, et al. The intrauterine hematoma: diagnostic and clinical aspects. JCU 1989; 17: 503～510.
8[8]Cashner K A, Christopher CR, Dysert G. Spontaneous fetal loss after demonstration of a live fetus in the first trimester. Obstet Gynecol 1987; 70:827～ 830.
