8Fiegler P, Katz M, Kaminski K, et al. Clinical value of a single serum CA 125 level in women with symptoms of imminent abortion during the first trimester of pregnancy[J]. J Reprod Med,2003,48(12) :982-988.
9Szekeres-Bartho J, Balasch J. Progestagen therapy for recurrent miscarria[J]. Hum Reprod Update, 2008,14 (1) .- 27-35.
10Duan L, Yan D, Zeng W, et al. Effect of progesterone treatment due to threatened abortion in early pregnancy for obstetric and perinatal outcomes [ J ]. Early Hum Dev,2010,86 ( 1 ) :41 - 43.