共 14 条
[1]
Currie J R, 1986, Midwifery, V2, P202, DOI 10.1016/S0266-6138(86)80046-8
[4]
DALTON KJ, 1987, COMPUTER OBSTETRICS, P135
[7]
KATZ M, 1985, OBSTET GYNECOL, V66, P273