2Lees cc,Thcmpson C, Danti L, et al. Glyceryl trinitrate and ritodrine in tocolysis an international multicenter randomized studs. Obstet Gynecol, 1999,94 (3) :403-408.
3Vinatier D. oufour. P. Berard J. utilization of intravenous nitroglycerin for obstetrical emergencies, int Gynecol, 1996,55 : 129-134.
4Smith GN, Brien JF. Use of nitroglycerin for uterine velaxation. Obstet GynecoL Surv, 1998,53:559-565.
5David M ,Walka MM ,Schmid B, et al. ni ;troglycerin application during lesarean delivery, Plasma levels, fetal/matemal ratio of nitroglycerin and effects in newborns. Am J obstet Gynecol,2000,182(4) ;955-961.
6Rosselli M, Ohara Y, Navas JP, et al. Regulation of endothelial Cell nitric oxide synthase mRNA expression by shesr stress. Am Physiol,1995,269: 1371-1379.
7Schwartz LB. Understanding human Parturtion lancet. 1997,350:1792- 1793.
8Dong YL, Dai Bs, Singh P, et al. involvement of nitric Oxide Pathwayin in Prostaglandin Fza-induced Preterm labor in rats Am j obstet Gynecol, 1997,177:907-917.
