共 5 条
[2]
HON EDWARD, 1968, CLIN OBSTET GYNECOL, V11, P145, DOI 10.1097/00003081-196803000-00009
[4]
PAUL RH, 1971, OBSTET GYNECOL, V37, P779
[5]
PAUL RH, 1970, OBSTET GYNECOL, V35, P161