1. Williams' obstetrics. 18th ed. Norwalk, Connecticut: Appleton & Lange;Cunningham,1989
2. Neuroophthalmologic abnormalities in severe pre-eclampsia and eclampsia;Digre;Invest Ophthalmol Vis Sci,1989
3. Magnesium sulfate and ritodrine hydrochloride: a randomized comparison;Hollander;Am J Obstet Gynecol,1987
4. Magnesium sulfate as a tocolytic agent;Elliott;Am J Obstet Gynecol,1983
5. Tocolysis using magnesium sulfate;Petrie;Semin Perinatol,1981