共 13 条
[2]
Chalmers J A, 1966, J Obstet Gynaecol Br Commonw, V73, P59
[4]
DILLON TF, 1960, OBSTET GYNECOL, V15, P587
[5]
DILLON TF, 1962, OBSTET GYNECOL, V20, P434
[6]
DOUGLAS RG, 1962, OBSTET GYNECOL, V20, P852
[7]
GRIER RM, 1949, AM J OBST G, V54, P511
[9]
NISWANDER KR, 1966, OBSTET GYNECOL, V27, P15
[10]
RICE RD, 1961, OBSTET GYNECOL, V17, P297