9Varela A F, Runge A, Lunge A, et al. Nitrio oxide and prostacylclin inhibit fetal platelet aggregation: A response similar to that observed in adults[J]. Am J Obstet Gynecol, 1992,167:1 599.
10Harrison D G. Eendothelial dysfunction in the coronary nicro circulation: A new clinicalentity or an experimental finding [J]. J Clin Invest, 1993,91 : 1-9.
