3[3]Andersson KE,Ingemarsson I,Ulmsten U,et al.Inhibition of prostaglandin-induced uterine activity by nifedipine.Br J Obstet Gynaecol,1979,86(3):175
4[4]Ulmsten U,Andersson KR,Wingerup L.Treatment of premature labor with the calcium antagonist nifedipine.Arch Gynecol,1980,229(1):1
5[5]Kupfermine M,Lessing JB,Yaron Y,et al.Nifedipine versus ritodrine for suppression of preterm labour.Br J Obstet Gynecol,1993,100(12):1090
6[6]Harake B,Gilbert RD,Ashwal S,et al.Nifedipine:effects on fetal and maternal hemodynamics in pregnant sheep.Am J Obstet Gynecol,1987,157(4):1003
7[7]Michael M,Moretti MD,Fiona M,et al.The effect of nifedipine therapy on fetal and placental doppler waveforms in preeclampsia remote from term.Am J Obstet Gynecol,1990,163(6):1844
