共 21 条
[1]
AUBRY RJ, 1977, PERINATAL MED MANAGE, P180
[3]
CHIK L, 1981, METHOD INFORM MED, V20, P133
[5]
CRANE JP, 1979, OBSTET GYNECOL, V54, P597
[6]
D'ELIA A, 1980, Clinical and Experimental Obstetrics and Gynecology, V7, P116