共 8 条
[1]
Barnes A B, 1983, Obstet Gynecol Surv, V38, P345, DOI 10.1097/00006254-198306000-00005
[2]
BOBROW ML, 1962, OBSTET GYNECOL, V20, P500
[3]
CHEW S Y, 1979, SMJ Singapore Medical Journal, V20, P395
[4]
DEWHURST J, 1981, INTEGRATED OBSTETRIC
[5]
HELVACIOGLU A, 1979, J REPROD MED, V22, P87
[6]
Hlavin G E, 1978, Int J Gynaecol Obstet, V16, P42
[8]
VANGELDEREN CJ, 1980, S AFR MED J, V58, P246