共 12 条
[2]
DIGNAM W J, 1976, Clinical Obstetrics and Gynecology, V19, P577, DOI 10.1097/00003081-197609000-00007
[3]
Essex NL, 1976, BRIT J HOSP MED, V15, P333
[4]
HEERY RD, 1963, OBSTET GYNECOL, V22, P360
[5]
JEFFERY P, 1977, MED J AUSTRALIA, V2, P41, DOI 10.5694/j.1326-5377.1977.tb99020.x
[7]
MORRIS WIC, 1955, J OBSTET GYN BR COMM, V62, P302
[8]
RUBIN A, 1964, JAMA-J AM MED ASSOC, V189, P835
[9]
SCHWARTZ BC, 1958, OBSTET GYNECOL, V11, P468
[10]
SEIGWORTH GR, 1966, OBSTET GYNECOL, V28, P764