共 20 条
[1]
Buchanan R. E., 1974, BERGEYS MANUAL SYSTE, V8th, DOI DOI 10.1007/978-0-387-21609-6
[2]
CUNNINGHAM FG, 1978, OBSTET GYNECOL, V52, P656
[5]
GIBBS RS, 1978, OBSTET GYNECOL, V52, P31
[8]
GILSTRAP LC, 1979, OBSTET GYNECOL, V53, P545