共 29 条
[1]
Barclay D L, 1969, Clin Obstet Gynecol, V12, P635, DOI 10.1097/00003081-196909000-00005
[3]
BRADBURY WC, 1955, WEST J SURG, V63, P232
[5]
DODEK S M, 1953, Med Ann Dist Columbia, V22, P235
[6]
Durfee R B, 1969, Clin Obstet Gynecol, V12, P575, DOI 10.1097/00003081-196909000-00002
[8]
HALLATT JG, 1959, AM J OBSTET GYNECOL, V75, P396
[10]
Irving Frederick, 1942, SAFE DELIVERANCE