共 20 条
- [15] PEDRON N, 1981, GINECOL OBSTET MEX, V49, P1
- [16] PEDRON N, GINEC OBST MEX
- [17] Pedron Nuevo N, 1979, Ginecol Obstet Mex, V45, P429
- [19] WESTROM L, 1970, J REPROD MED, V5, P154
- [20] WILSON J. ROBERT, 1965, AMER J OBSTET GYNECOL, V93, P802